78 years male bed ridden due to stroke since last year came with multiple blisters over left side ko face 3-4 days no itching no burning sensation no signs of inflammation and his vital are stable how to manage this case
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Clinical Assessment: Herpes Zoster (Shingles) - Facial/Ophthalmic Distribution
Diagnosis: Herpes Zoster (reactivation of varicella-zoster virus, VZV) involving the left trigeminal nerve (likely V1 - ophthalmic division), consistent with Herpes Zoster Ophthalmicus or facial zoster.
The unilateral left facial distribution in an elderly, immunologically compromised (bedridden post-stroke) patient is classic.
Why no pain/itching/burning? In elderly and immunocompromised patients, the classic prodromal pain may be blunted or absent - this is a recognized variant. Herpes sine herpete (pain without rash) and its reverse (rash with minimal pain) both exist. Age-related sensory neuropathy from the stroke itself may also mask pain.
Step-by-Step Management
1. Confirm the Diagnosis
- Clinical diagnosis is usually sufficient: unilateral grouped vesicles/blisters in dermatomal distribution on left face in an elderly immunocompromised patient.
- PCR of vesicle fluid - gold standard if confirmation needed (VZV PCR from lesion swab). This also distinguishes from zosteriform HSV.
- Tzanck smear - quick bedside test; shows multinucleate giant cells (non-specific, does not differentiate VZV from HSV).
- Direct fluorescent antibody (DFA) test from lesion scraping - rapid and specific.
2. Critical Assessment - Eye Involvement (URGENT)
Because this is facial zoster, you MUST immediately check for Herpes Zoster Ophthalmicus (HZO):
- Is the tip or side of the nose involved? (Hutchinson's sign - involvement of the nasociliary branch = high risk of ocular involvement)
- Check for conjunctival injection, photophobia, visual changes, periorbital edema
- Urgent ophthalmology referral if any eye involvement is suspected - HZO can cause keratitis, uveitis, and blindness
- Also check for ear canal vesicles/facial palsy (Ramsay Hunt syndrome - zoster of CN VII)
As noted in Bradley & Daroff's Neurology: "Involvement of the ophthalmic division of the trigeminal nerve (herpes zoster ophthalmicus) may be accompanied by keratitis, a potential cause of blindness requiring immediate treatment."
3. Antiviral Therapy (START IMMEDIATELY)
This patient is ≥50 years + cranial nerve involvement - antiviral treatment is mandatory.
Preferred oral antivirals (Fitzpatrick's Table 165-4):
| Drug | Dose | Duration |
|---|---|---|
| Valacyclovir (preferred) | 1 g orally every 8 hours | 7 days |
| Famciclovir (preferred) | 500 mg orally every 8 hours | 7 days |
| Acyclovir (less preferred) | 800 mg orally 5 times/day | 7 days |
Valacyclovir and famciclovir are preferred over acyclovir due to greater oral bioavailability, higher blood levels, and thrice-daily dosing (better compliance in elderly).
Note: Antivirals are most effective within 72 hours of rash onset. Since this patient presents at 3-4 days, initiation is still warranted - evidence shows benefit up to 7 days in cases with active lesion formation, cranial nerve involvement, or immunocompromise.
If severely immunocompromised or disseminated disease:
- IV Acyclovir 10 mg/kg every 8 hours for 7-10 days
Renal dose adjustment: This 78-year-old bedridden patient likely has reduced renal clearance. Check serum creatinine/eGFR and adjust antiviral dose accordingly (valacyclovir/acyclovir require dose reduction in renal impairment).
4. Corticosteroids (Consider)
- Short course of oral prednisolone (e.g., 40-60 mg/day tapered over 3 weeks) alongside antivirals reduces acute pain and improves quality of life in immunocompetent patients ≥50 years with moderate-severe pain.
- In this patient with no active inflammation/pain and likely immunocompromised state (bed-ridden, post-stroke), benefit vs. risk must be carefully weighed. Use cautiously; avoid if diabetic or septic.
5. Pain Management (Even if Currently Absent)
Pain may emerge as the rash evolves. Have a plan ready:
- Paracetamol/NSAIDs for mild-moderate pain
- Gabapentin (300 mg titrated) - reduces acute pain AND decreases risk of postherpetic neuralgia (PHN). Consider starting proactively given his age (>60 years = 50% PHN risk).
- Opioids for breakthrough severe pain (with caution in elderly)
- Avoid topical antivirals - they have no role in herpes zoster
6. Local Wound Care
- Keep blisters clean and dry; gentle antiseptic (chlorhexidine) to prevent secondary bacterial infection
- Non-adherent dressings if needed
- Do NOT puncture blisters - reduces risk of secondary infection and scarring
- Monitor for secondary bacterial superinfection (S. aureus, Streptococcus)
7. Infection Control (Isolation Precautions)
- VZV is transmissible to non-immune individuals (can cause chickenpox)
- Isolate patient from seronegative/immunocompromised individuals
- Contact + airborne precautions until all lesions are crusted
8. Monitoring for Complications in This Patient
Given his age, bedridden status, and post-stroke immunocompromise, watch for:
| Complication | Watch for |
|---|---|
| Postherpetic Neuralgia (PHN) | Pain persisting >30 days after rash - occurs in up to 50% of patients >60 yr |
| HZO / Keratitis | Visual changes, eye redness, Hutchinson's sign |
| Ramsay Hunt Syndrome | Facial palsy + ear/palate vesicles |
| Secondary bacterial infection | Purulent discharge, fever, erythema spreading |
| VZV encephalitis / vasculopathy | New neurological changes (already has stroke baseline - watch carefully) |
| Disseminated zoster | >20 vesicles outside primary dermatome = internal organ involvement risk |
9. General Supportive Care (Bedridden Patient)
- Maintain adequate hydration and nutrition
- Continue pressure ulcer prevention (already at high risk as bed-ridden)
- Nutritional support for wound healing
- DVT prophylaxis as per baseline post-stroke management
Summary Table
| Priority | Action |
|---|---|
| Urgent | Ophthalmology consult if any eye signs or Hutchinson's sign |
| Urgent | Start Valacyclovir 1g TDS x 7 days (renal-adjusted) |
| Same day | VZV PCR/Tzanck swab to confirm diagnosis |
| Proactive | Gabapentin to prevent PHN |
| Ongoing | Wound care, infection control, monitoring for complications |
Sources: Fitzpatrick's Dermatology, 8th Ed., p. 3078-3082 (Table 165-4) | Goldman-Cecil Medicine, p. 4297 | Bradley & Daroff's Neurology in Clinical Practice, pp. 1011-1013 | Dermatology 2-Volume Set, 5th Ed., p. 1697
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