This is a high-resolution clinical photograph of an infant scalp demonstrating seborrhoeic dermatitis with yellow greasy scales preferentially located on the frontal/temporoparietal scalp and sparing the face. The image captures the characteristic matting and flaking scales adherent to hair shafts, with mild erythema and diffuse scale accumulation at the crown and temple regions. The lesion is non-vesicular, non-exudative, and appears symmetrical across the scanned scalp area. The findings are consistent with cradle cap, a common, benign dermatologic condition of infancy believed to reflect sebaceous gland activity and infant skin immaturity. Differential considerations include tinea capitis if alopecia or perifollicular scaling is prominent, atopic dermatitis with more diffuse erythema, or psoriasis with well-demarcated plaques though these are less typical in early life. Clinically correlated, this pattern typically responds to routine infant scalp hygiene and gentle, non-irritating cleansing; medicated soaps or antifungal shampoos may be used under pediatric guidance if scales persist. This image is valuable for educational reference in pediatric dermatology, dermoscopy correlation not shown, and radiology cross-disciplinary discussions about differential diagnoses of scalp scaling. Potential applications: medical education, image-based differential diagnosis training, clinical case discussions, and telemedicine triage for infants presenting with cradle cap.

Clinical photograph of the scalp demonstrates seborrhoeic dermatitis characterized by honey-coloured, greasy scales adherent to hair shafts with mild surrounding erythema. Involvement is patchy to diffuse over hair-bearing skin, most pronounced at the vertex and temple regions, with scales accumulating along follicular openings. The yellowish scales are waxy and easily removable, yet can be persistent; pruritus is commonly reported in patients. Hair shafts appear preserved and no frank alopecia is evident in this image. This presentation aligns with the typical clinical phenotype of seborrhoeic dermatitis, a common inflammatory scalp dermatosis linked to sebaceous gland activity and colonization by Malassezia species. The visual features help distinguish it from psoriasis (silvery scales, well-demarcated plaques) and tinea capitis (hair loss, broken hairs, erythematous patches). Diagnostic significance lies in recognizing the greasy, yellow scales on the scalp as a hallmark, guiding topical therapies such as selenium sulfide, zinc pyrithione, ketoconazole antifungal shampoos, and low‑potency corticosteroids when appropriate. Clinically, the image is relevant for dermatology education, differential diagnosis exercises, and treatment response documentation in adult and pediatric patients. The image supports hands-on recognition of seborrhoeic dermatitis patterns in scalp dermatology curricula and serves as a reference for teledermatology consultations.

Clinical photography of the scalp demonstrating seborrhoeic dermatitis with thick adherent scales. The image presents a macroscopic view of the left temporal scalp and retroauricular region. Specimen type: human scalp skin. Imaging perspective: close-up, lateral scalp with ear visible. The scales are thick, greasy, yellowish, lamellate, coating the scalp surface and obscuring underlying hair shafts. Surrounding skin shows mild erythema and minimal crusting; hair density is preserved; no ulceration. This pattern is characteristic of seborrhoeic dermatitis: chronic relapsing inflammatory dermatosis associated with Malassezia yeast, sebaceous gland activity, and host inflammatory response. The lesion displays confluent plaques with adherent scale, diffuse but more prominent in chronically affected areas such as the temporal and retroauricular scalp. Diagnostic significance: photographic documentation aids clinical diagnosis, guides topical antifungal or anti-seborrheic therapy, and serves as baseline for response assessment. Differential considerations include psoriasis capitis (more silvery scale and well-demarcated plaques), tinea capitis (alopecia, hair shedding, broken hairs), and contact dermatitis. Clinical correlation includes pruritus, oiliness, and seasonal flares. This image is useful for education, dermatology training, and image-based search queries for seborrheic dermatitis of the scalp. Images like this support differential diagnosis, treatment planning, and educational demonstrations for medical students, residents, and clinicians in clinics.

Comprehensive Description: A high-resolution clinical photograph captures the retroauricular skin behind the ear on an adult patient. The image demonstrates erythema and scale with crusted, greasy plaques localized to the posterior auricular region. The skin shows focal desquamation with lamellar white scales adherent to the lesion edges; surrounding skin appears mildly dry with faint erythema. There is no visible purulence, ulceration, or vesiculation. The distribution is localized to the retroauricular fold, consistent with seborrhoeic dermatitis involving sun-exposed or sebaceous-rich areas; reflectivity of the skin appears slightly oily, with fissuring minimized by moisture. The appearance is characteristic of chronic inflammatory dermatosis in adults, often presenting bilaterally on the scalp, eyebrows, nasolabial folds, and behind-ears. In this image, the retroauricular involvement aligns with typical patterns described for seborrheic dermatitis, as opposed to psoriasis or contact dermatitis, which may show more scaling, well-defined plaques, or vesiculation. The clinical context suggests a benign chronic inflammatory process related to Malassezia yeast overgrowth and sebaceous gland activity; the lesion responds to antifungal or anti-inflammatory therapy. This image is useful for dermatology education, differential diagnosis practice, and documentation of retroauricular SD for clinician reference and patient education.