For my dermatology theory exam i am presenting a case on genital molluscum… please prepare me extensively for the questions that examiner can ask from medium to hard to very hard

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Genital molluscum case discussions can be examined at several levels:

Core case presentation
- Typical morphology, distribution, symptoms, sexual history, and examination findings
- Differential diagnosis of genital papules
- When a clinical diagnosis is enough and when to investigate
Virology and pathogenesis
- Molluscum contagiosum virus classification, transmission, incubation, epidermal changes, Henderson-Patterson bodies
- Reasons for lesion persistence, recurrence, and extensive disease
Sexual-health evaluation
- STI screening and partner issues
- Counselling on sexual transmission, condoms, shaving/waxing, autoinoculation, and infectivity
- Distinguishing genital infection in adults from childhood infection and possible safeguarding issues
Management
- Observation versus active treatment
- Curettage, cryotherapy, topical agents, adverse effects, recurrence, and follow-up
- Treating lesions in pregnancy, people living with HIV, and other immunocompromised patients
Very-hard viva areas
- Histopathology and viral immune evasion
- Why inflammatory resolution occurs
- Management of giant, atypical, recalcitrant, or disseminated molluscum
- Evidence limitations and guideline-based choices

High-level approach: In an immunocompetent adult, genital molluscum is usually a benign, sexually transmissible poxvirus infection characterized by discrete pearly, dome-shaped, umbilicated papules. Diagnosis is generally clinical. Your answer should show that you can recognize mimics, screen appropriately for other STIs where indicated, counsel carefully, and individualize treatment based on symptoms, lesion burden, patient preference, pregnancy status, and immune status.

Which format would help you most?

Give me a complete viva question-and-answer bank

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Finding Sources

Searching PubMed

"Molluscum Contagiosum"[MeSH Terms]

Searching the Web

genital molluscum contagiosum guideline diagnosis treatment sexual health 2025

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Reading Web Page

https://www.mshc.org.au/health-professionals/treatment-guide…

Finding Sources

Reading Web Page

https://www.bad.org.uk/pils/molluscum-contagiosum

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Genital Molluscum Contagiosum: Complete Viva Question-and-Answer Bank

Use this as a spoken-answer bank. In the viva, begin with the bold first sentence, then add details if the examiner asks.

A. Opening the case

1. What is your diagnosis?

Genital molluscum contagiosum, a sexually acquired cutaneous infection caused by molluscum contagiosum virus.
It presents as discrete, smooth, pearly or skin-coloured, dome-shaped papules, usually with central umbilication.

2. How would you present this case in one sentence?

This is a case of genital molluscum contagiosum in an adult, clinically diagnosed by multiple asymptomatic, umbilicated, pearly papules over the genital and adjacent hair-bearing areas, with evaluation for concomitant STIs and immunosuppression where indicated.

3. Describe the classical lesion.

A 2-5 mm, firm, smooth-surfaced, dome-shaped, skin-coloured or pearly papule with a central dell or umbilication.
The central core may contain a white, waxy material. Lesions can be larger in immunosuppression.

4. What is the usual distribution in sexually acquired disease?

Genitals, pubic region, lower abdomen, upper inner thighs, buttocks, and sometimes the perianal region.
Distribution reflects skin-to-skin sexual contact rather than infection of mucosal surfaces.

5. Are lesions painful?

Usually no. They are commonly asymptomatic, but may itch, become irritated, inflamed, crusted, or secondarily infected.

6. What does it mean if a lesion becomes red and inflamed?

Inflammation often represents an immune response and may herald resolution, rather than bacterial infection.
However, tenderness, spreading erythema, purulent discharge, or systemic symptoms should prompt evaluation for secondary bacterial infection.

7. What is the BOTE sign?

BOTE means “beginning of the end.”
It refers to erythema, swelling, crusting, or pustulation of molluscum lesions that often precedes spontaneous clearance.

B. Etiology and virology

8. What causes molluscum contagiosum?

Molluscum contagiosum virus, a human-specific poxvirus.

9. What type of virus is it?

It is a large, enveloped, double-stranded DNA virus in the Poxviridae family.

10. Where does the virus replicate?

Unlike most DNA viruses, poxviruses replicate entirely in the cytoplasm.
They encode many of the enzymes needed for transcription and DNA replication.

11. How many viral types are there?

Four principal types have been described: MCV-1 to MCV-4.

12. Which type is most common?

MCV-1 is the most common worldwide.

13. Which type is relatively more common in HIV infection?

MCV-2 has been reported more commonly in people with HIV infection.
Andrews’ notes that MCV-2 accounts for a majority of infections in HIV in some series. Andrews’ Diseases of the Skin, p. 453.

14. Is molluscum an STI in every patient?

No. It is transmitted by direct contact and autoinoculation; in adults with lesions restricted to the genital region it is commonly sexually acquired.
In children, nonsexual transmission is much more common.

15. How is it transmitted?

By direct skin-to-skin contact, sexual contact, and autoinoculation.
Fomites such as towels, clothing, and shared bathing equipment may contribute, though direct contact is the main route.

16. What is autoinoculation?

Spread of virus from one area of the patient’s skin to another by scratching, shaving, waxing, friction, or manipulation of lesions.

17. Why do shaving and waxing matter?

They cause microtrauma and mechanically distribute viral material, causing linear or clustered new lesions.
Patients should be advised not to shave, wax, squeeze, or scratch affected genital skin while lesions are active.

18. What is the incubation period?

Usually about 2 weeks to 6 months, commonly around 2-7 weeks.
Because incubation is variable, one usually cannot identify the exact source or date of acquisition.

19. Does molluscum establish latency like herpes simplex virus?

No established clinically important latent infection analogous to HSV is recognized.
Persistent or recurrent lesions usually reflect ongoing infection, autoinoculation, incomplete immune clearance, or reinfection.

C. Epidemiology and risk groups

20. Which groups are most commonly affected?

Young children, sexually active young adults, and immunocompromised people.

21. Why is genital molluscum particularly important in an adult?

It may be sexually acquired and should trigger sexual-health assessment, including consideration of testing for other STIs.

22. Does molluscum imply infidelity?

No. The incubation period is variable, lesions may be unnoticed for weeks or months, and infection can be transmitted through nonpenetrative skin-to-skin contact.
Do not make assumptions about a partner or relationship.

23. Does genital molluscum prove sexual abuse in a child?

No. Molluscum in children is commonly acquired nonsexually.
However, isolated anogenital lesions, concerning history, other STIs, trauma, behavioural concerns, or safeguarding risk should prompt a careful multidisciplinary safeguarding assessment.

24. Which skin condition predisposes to extensive molluscum?

Atopic dermatitis.
Barrier disruption, scratching, and altered local immunity facilitate dissemination.

25. What is eczema molluscum or molluscum dermatitis?

An eczematous eruption around or near molluscum lesions, especially in atopic individuals.
It may be treated with appropriate low-potency topical corticosteroid for the eczema; this does not usually worsen molluscum.

26. Which systemic conditions or treatments predispose to severe disease?

HIV infection, malignancy, organ transplantation, systemic corticosteroids, other immunosuppressive therapy, and severe defects of cellular immunity.

D. Examination and diagnostic approach

27. How is the diagnosis made?

It is usually a clinical diagnosis based on morphology and distribution.

28. What examination will you perform?

I will inspect all genital, pubic, perineal, perianal, buttock, lower abdominal, and upper thigh skin, and examine for other STIs where appropriate.
I will also assess lesion count, morphology, inflammation, excoriation, secondary infection, and atypical features.

29. Is genital mucosa commonly affected?

Molluscum predominantly affects keratinized skin, especially hair-bearing and flexural areas.
True mucosal involvement is uncommon.

30. What dermoscopic findings support molluscum?

A central polylobular white-yellow amorphous structure with peripheral crown vessels or a red corona.
The vessels typically do not cross the central area. Fitzpatrick’s Dermatology, p. 3118.

31. When is dermoscopy useful?

When central umbilication is not obvious or when distinguishing molluscum from genital warts, folliculitis, sebaceous hyperplasia, or other papular lesions.

32. Do you need laboratory confirmation?

No, not in typical cases.

33. When would you investigate further?

If lesions are atypical, giant, widespread, persistent, facial in an adult, treatment-resistant, ulcerated, pigmented, or if malignancy, deep fungal infection, or immunosuppression is suspected.

34. Is PCR routinely needed?

No. PCR can confirm the diagnosis but is rarely necessary in routine clinical practice. Fitzpatrick’s Dermatology, p. 3118.

35. When will you biopsy a lesion?

When the morphology is atypical, the diagnosis is uncertain, lesions fail usual management, or malignancy or opportunistic infection must be excluded.

36. What tests would you offer in an adult with genital molluscum?

I would offer a sexual-health screen tailored to risk and local guidance, typically including HIV testing, syphilis serology, and nucleic-acid testing for chlamydia and gonorrhoea at relevant sites.
Testing for hepatitis B, hepatitis C, trichomoniasis, or other infections depends on history, local epidemiology, and sexual practices.

37. When is HIV testing especially important?

When lesions are numerous, giant, widespread, recurrent, atypical, facial, or resistant to conventional treatment, or when the patient has other risk factors for HIV.
The Melbourne Sexual Health Centre specifically highlights HIV testing for multiple, widespread, large, or facial lesions.

38. Do all patients need a full STI screen?

Not necessarily, but genital molluscum provides an important opportunity to assess STI risk and offer appropriate testing.
The decision should be individualized rather than automatic and judgmental.

E. Differential diagnosis

39. What is the differential diagnosis of genital molluscum?

Genital warts, folliculitis, herpes simplex, pearly penile papules, Fordyce spots, sebaceous hyperplasia, epidermoid cysts, scabies nodules, lichen planus, and in atypical cases, neoplasia or opportunistic infections.

40. How do you differentiate molluscum from genital warts?

Feature	Molluscum contagiosum	Condyloma acuminata
Cause	Molluscum contagiosum virus	HPV
Surface	Smooth	Rough, verrucous, papillomatous
Shape	Dome-shaped	Exophytic, cauliflower-like
Central dell	Characteristic	Absent
Lesion content	Waxy central core	No core
Dermoscopy	Central white-yellow lobules, crown vessels	Papillary projections, dotted/glomerular vessels

41. How do you differentiate it from folliculitis?

Folliculitis is centered on a hair follicle and often presents as a pustule with erythema and tenderness.
Molluscum is a firm, nonfollicular, umbilicated papule, although it can become secondarily inflamed.

42. How do you differentiate it from herpes genitalis?

Herpes typically causes painful grouped vesicles that erode into ulcers. Molluscum causes persistent, painless, firm, umbilicated papules.

43. How do you differentiate it from pearly penile papules?

Pearly penile papules are normal anatomical variants arranged symmetrically around the corona of the glans. They lack central umbilication, are not contagious, and need no treatment.

44. How do you differentiate it from Fordyce spots?

Fordyce spots are ectopic sebaceous glands, appearing as multiple tiny yellow-white papules, commonly on genital skin or lips. They are noninfectious and not umbilicated.

45. How do you differentiate it from scabies nodules?

Scabetic nodules are intensely pruritic, often occur on the scrotum, penis, axillae, or groin, and are associated with nocturnal itch, burrows, and household contact symptoms.

46. What important diagnoses must be considered in an immunocompromised patient with umbilicated papules?

Disseminated cryptococcosis, histoplasmosis, talaromycosis where epidemiologically relevant, and other opportunistic infections, as well as skin malignancy.
This is why biopsy and systemic assessment are important in atypical cases. Fitzpatrick’s Dermatology, p. 3118.

47. What is the classic opportunistic infection that can resemble molluscum in advanced HIV?

Cryptococcosis.
Cutaneous cryptococcal lesions can be umbilicated and mimic molluscum.

F. Histopathology

48. Describe the histopathology of molluscum contagiosum.

It shows a crateriform or cup-shaped epidermal lesion with acanthosis and lobules of hyperplastic epidermis extending into the dermis.

49. What are Henderson-Patterson bodies?

They are large intracytoplasmic viral inclusion bodies within keratinocytes, also called molluscum bodies.

50. How do Henderson-Patterson bodies stain?

They are initially eosinophilic in lower epidermal layers and become more basophilic toward the surface.

51. What happens to the keratinocyte nucleus?

The enlarging inclusion body displaces and compresses the nucleus to the cell periphery.

52. What does the central plug contain?

Degenerated keratinocytes packed with viral inclusion bodies and virions.

53. How can the diagnosis be rapidly supported from lesion contents?

By crush preparation of the central material with Giemsa or Wright staining, demonstrating molluscum inclusion bodies. Fitzpatrick’s Dermatology, p. 3118.

54. Why are lesions usually superficial?

The virus infects keratinocytes in the epidermis and produces a localized epidermal proliferation rather than systemic invasion.

G. Natural history and prognosis

55. What is the natural course in an immunocompetent patient?

It is self-limiting. Individual lesions often last around 2 months, but new lesions may arise by autoinoculation, so the overall infection may persist for months to years.

56. How long does genital molluscum usually last untreated?

Often 6-12 months, but it may persist for up to 2 years or longer in some patients.

57. Does it leave scars?

Spontaneous resolution usually does not leave scars. Scarring is more likely after excoriation, secondary infection, or destructive treatment.

58. Can lesions recur after treatment?

Yes. Apparent recurrence may be new lesions from previously incubating infection, autoinoculation, incomplete clearance, or reinfection.
Treatment removes visible lesions but does not guarantee that no further lesions will emerge.

59. Does treatment always shorten disease duration?

Not reliably. Treatment can remove visible lesions and may reduce transmission or autoinoculation, but comparative evidence for one uniformly superior treatment is limited.
Fitzpatrick’s notes that no single intervention was convincingly effective in the 2017 Cochrane review, although this evidence base largely concerns cutaneous disease and has limitations. Fitzpatrick’s Dermatology, p. 3118.

H. Management principles

60. What are your management goals?

Confirm the diagnosis, assess STI and immunosuppression risk, provide counselling, relieve symptoms, limit autoinoculation and transmission, and treat lesions if clinically indicated or preferred.

61. Does every patient need treatment?

No. Observation is a reasonable option for an immunocompetent patient with typical, limited, asymptomatic lesions.

62. When would you actively treat?

When lesions are symptomatic, persistent, numerous, spreading, cosmetically distressing, complicated by eczema or bacterial infection, creating sexual distress, or when the patient prefers removal after informed discussion.

63. What should you tell the patient before treatment?

There is no perfect treatment. Procedures can be painful and may cause blistering, pigment change, scarring, or temporary inflammation; new lesions can still occur after treatment.

64. What are the main treatment modalities?

Physical destruction, topical therapy in selected patients, treatment of associated dermatitis or infection, and correction of underlying immunosuppression where possible.

65. What physical treatments can be used?

Cryotherapy, curettage, cautery or electrodessication, and occasionally laser treatment.

66. What is the role of cryotherapy?

Cryotherapy is a commonly used office-based option for selected visible lesions.
It is effective in many patients but can cause pain, edema, blistering, dyspigmentation, and rarely scarring. Treatments may need repeating.

67. How would you perform cryotherapy in principle?

Apply liquid nitrogen to the lesion until a small ice halo surrounds it, avoiding excessive freezing of surrounding genital skin, then reassess and repeat at intervals if needed.
Technique should follow local procedural guidance and account for site, skin type, lesion number, and patient tolerance.

68. What are the advantages of curettage?

It gives immediate removal and can provide material for histology if needed.

69. What are the disadvantages of curettage?

Pain, bleeding, risk of scarring, need for local anaesthesia in many adults, and impracticality with numerous lesions.

70. What is the role of podophyllotoxin?

Podophyllotoxin 0.5% has been used as a patient-applied treatment for genital molluscum in some sexual-health guidelines.
It is cytotoxic and can cause marked local irritation. It must be applied only to lesions and avoided on mucosal surfaces.

71. How is podophyllotoxin commonly prescribed when it is chosen?

A commonly cited regimen is 0.5% cream or solution twice daily for 3 consecutive days each week, for up to 4 weeks.
Use local institutional guidance, provide careful application instructions, and stop if excessive irritation occurs.

72. Who should not use podophyllotoxin?

Pregnant or breastfeeding patients should not use it.
Avoid use on mucosal surfaces, large areas, or extensively damaged/inflamed skin.

73. What is the current role of imiquimod?

Imiquimod is not a preferred routine treatment for molluscum because evidence of benefit is poor and local inflammation is common.
Older guidance included it as an option, but large controlled studies did not demonstrate convincing efficacy. Dermatology, 5th ed., selected poxvirus infections. Do not present it as first-line therapy.

74. Can cantharidin be used?

It can be used for cutaneous molluscum in some settings, but it should be used cautiously and generally avoided on genital or mucosal skin because blistering and irritation may be severe.
Availability and approved use vary by country.

75. Is topical cidofovir a routine treatment?

No. It is a specialist, off-label option for severe refractory disease, particularly in immunocompromised individuals.
Potential toxicity, compounding requirements, and limited evidence prevent routine use.

76. Do oral antivirals such as acyclovir work?

No. Acyclovir is not effective against molluscum contagiosum.

77. What about oral cimetidine?

It has been used, mainly in children, but evidence is inconsistent and it is not standard therapy for genital molluscum.

78. Should you squeeze lesions?

No. Squeezing can spread the virus, cause trauma, secondary infection, and scarring.

79. Should you prescribe antibiotics for an inflamed lesion?

Not routinely. Inflammation frequently reflects the BOTE sign.
Use antibiotics only when clinical findings support true bacterial superinfection.

I. Counselling and sexual-health advice

80. What key counselling will you give?

The infection is benign and self-limiting, but transmissible while lesions are present. Avoid scratching, shaving, waxing, and squeezing lesions; avoid sharing towels, bedding, clothing, razors, or sex toys; and cover lesions where feasible.

81. What is your sexual advice?

Avoid sexual contact involving the affected skin until lesions have cleared or are effectively covered, recognizing that covering may not eliminate all transmission risk.

82. Do condoms fully prevent transmission?

No. Condoms reduce but do not eliminate risk because molluscum spreads through skin-to-skin contact from areas not covered by the condom.

83. What advice will you give regarding sex toys?

Do not share them while lesions are active. If used, cover with a new condom and clean according to manufacturer instructions.

84. What advice will you give regarding partners?

Current partners should be informed that they may have been exposed and should seek review if lesions develop.
Routine empiric treatment of an asymptomatic partner is not usually required.

85. Is formal partner notification mandatory?

It is not handled like chlamydia or gonorrhoea with mandatory contact tracing, but partner discussion is sensible because transmission can occur through close sexual skin contact.

86. Can the patient go swimming?

Yes, but lesions should be covered with a waterproof dressing where practical, and towels or personal equipment should not be shared.

87. Can the patient donate blood?

Molluscum is a localized skin infection and is not generally a blood-borne infection, but blood-donation eligibility is determined by local blood-service policies.

88. Is HPV vaccination protective against molluscum?

No. HPV vaccines do not prevent molluscum contagiosum.

J. Pregnancy and breastfeeding

89. How does management change in pregnancy?

Observation or carefully selected physical treatment, such as cryotherapy or curettage by an experienced clinician, is generally preferred if treatment is necessary.

90. Which drugs should be avoided in pregnancy?

Podophyllotoxin should be avoided. Imiquimod is also generally avoided because of limited safety data and lack of established benefit.

91. Can molluscum affect the baby?

Vertical transmission is uncommon but can occur, including around the time of vaginal delivery.
Neonatal lesions may occur, but genital molluscum alone is not usually an indication for caesarean delivery.

92. What about breastfeeding?

Avoid applying potentially toxic topical treatments to the breast or any area that could contact the infant. Podophyllotoxin and imiquimod are generally avoided during breastfeeding in older sexual-health guidance.

K. HIV and immunocompromised patients

93. How does molluscum present in HIV infection?

It may be numerous, giant, confluent, atypical, persistent, disseminated, or facial, and can become cosmetically and functionally disabling.

94. What is a giant molluscum lesion?

A lesion larger than 1 cm is commonly termed giant molluscum.

95. What does giant or facial molluscum in an adult suggest?

Underlying immunosuppression, particularly advanced HIV, should be considered and investigated.

96. What is the relationship between CD4 count and lesion burden?

More severe molluscum is associated with advanced cellular immunosuppression, and lesion burden tends to be greater at lower CD4 counts.

97. What is the most important treatment for extensive HIV-associated molluscum?

Effective antiretroviral therapy.
Immune restoration may lead to regression of lesions, while local therapies can be used for troublesome lesions. Campbell-Walsh Urology, genital molluscum section.

98. Can starting ART worsen lesions initially?

Yes, inflammatory worsening can occur during immune reconstitution, although longer-term immune recovery generally improves control.
This should be assessed in the clinical context and not confused automatically with treatment failure.

99. How do you manage refractory disease in an immunocompromised patient?

Confirm the diagnosis, biopsy atypical lesions, assess and optimize immune status, involve dermatology, sexual health, infectious diseases, or HIV specialists, and use individualized local or specialist therapies.

100. Why is biopsy especially important in advanced HIV?

Because mimics such as cryptococcosis, histoplasmosis, talaromycosis, Kaposi sarcoma, basal cell carcinoma, and other neoplasms may have serious consequences if missed.

L. Medium-to-hard examiner traps

101. “If it resolves spontaneously, why treat it?”

Treatment is individualized. It may reduce visible lesions, relieve pruritus or irritation, reduce autoinoculation, improve sexual confidence, and potentially reduce transmission, but these benefits must be balanced against pain, scarring, cost, and uncertain comparative efficacy.

102. “Does removal make the patient noninfectious immediately?”

Not necessarily. Removal clears treated visible lesions, but subclinical infection or incubating lesions may remain, and new lesions can emerge.

103. “Does treating one lesion trigger clearance of all lesions?”

Sometimes inflammation after destructive treatment may enhance an immune response, but this is not predictable and should not be promised.

104. “Why does molluscum persist for so long despite being a superficial infection?”

The virus has immune-evasion mechanisms and remains within epidermal keratinocytes. Local immune recognition and clearance can be delayed.

105. “Which immune pathway does the virus interfere with?”

Molluscum virus encodes immune-modulating proteins and can interfere with inflammatory signaling, including NF-kappa-B-related pathways.
This helps explain limited inflammation in many lesions and persistence. Andrews’ Diseases of the Skin, p. 453.

106. “Why are lesions umbilicated?”

The epidermal hyperplasia forms a cup-shaped lesion, and the central area contains degenerating, virus-laden keratinocytes that create the characteristic central dell or plug.

107. “Why do lesions often occur in a line?”

Koebner-like mechanical spread from autoinoculation after scratching, shaving, or friction can create linear distribution.

108. “Why should you not overdiagnose bacterial cellulitis around molluscum?”

Inflamed molluscum can be warm, red, tender, pustular, or crusted as part of immune-mediated resolution. Antibiotics are needed only if there are convincing features of bacterial infection.

109. “Can a patient have molluscum and genital warts together?”

Yes. Co-infection with other STIs, including HPV, can occur; each lesion type should be identified and managed appropriately.

110. “Would you test the lesion for HPV?”

No. Molluscum is clinically distinct from HPV genital warts. HPV testing of a molluscum lesion is not indicated.

111. “Is molluscum a reportable STI?”

Requirements vary by jurisdiction. In many settings it is not a routinely notifiable infection, unlike syphilis, gonorrhoea, or HIV. Follow local public-health requirements.

112. “What is your follow-up plan?”

If observing, advise return for new symptoms, rapid spread, atypical changes, or concern about STI results. If treating, review after healing or at a planned interval to assess response, adverse effects, and emergence of new lesions.

M. Very-hard viva questions

113. “What is the difference between cure and lesion clearance?”

Lesion clearance means visible lesions have resolved. Cure implies eradication of infection and no future lesions, which cannot be guaranteed because incubating lesions or residual infection may become evident later.

114. “Why is molluscum contagious despite an intact-looking epidermis?”

The central keratinous material contains large numbers of virions. Contact, friction, or microabrasions allow inoculation into another person’s epidermis or another site on the same patient.

115. “Why do immunocompromised patients have giant lesions?”

Cell-mediated immunity is needed to control viral replication. When it is impaired, viral proliferation and epidermal hyperplasia continue, leading to numerous, large, confluent, and persistent lesions.

116. “What would make you doubt the diagnosis in a supposed case of genital molluscum?”

Ulceration, marked pain, irregular pigmentation, spontaneous bleeding, a fixed infiltrated lesion, rapid destructive growth, persistent solitary lesion in an older person, systemic symptoms, or failure to respond as expected should prompt reconsideration and possible biopsy.

117. “What is the key histological distinction from viral warts?”

Molluscum has cup-shaped epidermal hyperplasia and intracytoplasmic Henderson-Patterson bodies. Warts show papillomatosis, hyperkeratosis, koilocytosis, and HPV-related changes, without molluscum bodies.

118. “How would you approach a solitary umbilicated penile papule?”

Assess classic morphology, dermoscopy, duration, sexual history, symptoms, and associated lesions. If it is not clearly molluscum or has atypical features, consider biopsy to exclude adnexal tumor, basal cell carcinoma, keratoacanthoma-like lesions, or other pathology.

119. “How would you manage 100 facial and genital lesions in a patient newly diagnosed with HIV?”

I would assess HIV stage and CD4 count, evaluate for other opportunistic disease and STIs, initiate or optimize ART with HIV specialist input, biopsy atypical lesions if needed, manage troublesome lesions with specialist-directed local or antiviral therapies, and provide psychological and transmission counselling.

120. “What would you say if the patient asks: ‘Did I get this from my partner?’”

I would say that genital molluscum is commonly acquired through close skin contact, including sexual contact, but the incubation period varies and lesions may remain unnoticed. We cannot reliably determine when, from whom, or under what circumstances it was acquired.

N. A 90-second ideal management answer

This patient has genital molluscum contagiosum, diagnosed clinically by typical smooth, dome-shaped, centrally umbilicated papules. I would examine the full anogenital region and adjacent hair-bearing skin, assess lesion burden and atypical features, and take a sensitive sexual history. I would offer appropriate STI screening, particularly HIV testing if lesions are extensive, atypical, giant, facial, or recurrent.

In an immunocompetent patient, reassurance and observation are acceptable because the condition is benign and usually self-limiting. I would counsel against shaving, waxing, scratching, or squeezing lesions; advise avoiding sharing towels and sex toys; and explain that condoms reduce but do not completely prevent transmission.

If active treatment is preferred or indicated, options include cryotherapy or curettage, after discussing pain, dyspigmentation, blistering, scarring, and the possibility of new lesions. Podophyllotoxin may be considered in selected nonpregnant adults according to local guidance, but should be avoided in pregnancy and breastfeeding. Imiquimod is not a routine preferred treatment because evidence of efficacy is weak. In extensive or atypical disease, I would investigate immunosuppression, biopsy if needed, and involve dermatology or sexual-health specialists.

O. Rapid-fire facts to memorize

Virus: Molluscum contagiosum virus, Poxviridae.
Genome: Enveloped double-stranded DNA virus.
Replication: Cytoplasm.
Typical lesion: Smooth, firm, pearly, umbilicated papule.
Usual size: 2-5 mm.
Giant lesion: More than 1 cm.
Histology: Cup-shaped epidermal hyperplasia with Henderson-Patterson bodies.
Transmission: Direct skin contact, sexual contact, autoinoculation, possibly fomites.
Adult genital distribution: Genitals, pubis, lower abdomen, thighs, buttocks.
Diagnosis: Usually clinical.
Routine PCR: Not needed.
Biopsy: Atypical, persistent, giant, immunocompromised, or malignancy/opportunistic infection concern.
Natural course: Usually resolves spontaneously, often in 6-12 months but may last up to 2 years.
Treatment: Observation, cryotherapy, curettage, selected topical therapy.
Avoid: Shaving, waxing, squeezing, scratching.
Pregnancy: Avoid podophyllotoxin; physical treatment or observation is preferred if needed.
HIV clue: Numerous, giant, facial, confluent, refractory lesions.
Best intervention in HIV: Effective ART plus specialist care.
BOTE sign: Inflammation may mean impending resolution.
Condoms: Reduce but do not eliminate transmission risk.

The morphology, histology, natural course, and management principles above are supported by Andrews’ Diseases of the Skin, p. 453, Fitzpatrick’s Dermatology, p. 3118, and the Melbourne Sexual Health Centre guidance. A key evidence caveat is that comparative treatment evidence remains limited, and current practice should follow local sexual-health or dermatology protocols.

Is there any way to shorten disease duration

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Finding Sources

Searching PubMed

"Molluscum Contagiosum"[MeSH Terms] AND treatment

Searching the Web

genital molluscum guideline shorten duration treatment cryotherapy curettage evidence 2025

Yes, visible lesions can often be cleared faster with treatment, but no method reliably guarantees a shorter total disease course because new lesions may emerge from already incubating infection or autoinoculation.

For an immunocompetent adult with genital molluscum:

Cryotherapy can clear treated lesions relatively quickly, but may require repeat sessions and can cause pain, blistering, pigment change, or scarring.
Curettage removes lesions immediately and is useful for a small number of lesions, but is painful and may scar.
Podophyllotoxin 0.5% is used in some genital-molluscum protocols for selected nonpregnant adults, but it can cause marked irritation and must be applied only to lesions. It is contraindicated in pregnancy and generally avoided in breastfeeding.
Imiquimod is not a good answer for shortening duration. Controlled studies have not shown convincing benefit, and local inflammation is common.
Do not shave, wax, scratch, or squeeze lesions. This may not clear existing lesions but is one of the best ways to avoid prolonging the course through autoinoculation.
In HIV or other immunosuppression, optimizing immune status, especially initiating or maintaining effective ART in HIV, is the intervention most likely to improve extensive or persistent disease.

A good viva answer:

“Active treatment such as cryotherapy or curettage may clear individual lesions sooner and may reduce autoinoculation and transmission. However, there is no uniformly proven treatment that reliably shortens the entire natural course, because further lesions may appear after treatment. Therefore, management is individualized after balancing lesion burden, symptoms, patient preference, adverse effects, pregnancy status, and immune status.”

The textbook evidence notes that cryotherapy and curettage are among the more successful physical options, but also that no medical treatment has been consistently effective at changing the overall natural history. Goldman-Cecil Medicine, Molluscum Contagiosum Virus. The Melbourne Sexual Health Centre guideline similarly considers no treatment reasonable in immunocompetent patients while offering cryotherapy and selected topical options when treatment is desired.

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