Clinical photograph illustrating allergic contact dermatitis of the face with prominent perinasal crusting and erythema following use of a nasal ointment containing chlorhexidine and neomycin. Modality is standard digital skin photography, frontal/anterior view, with close-up emphasis on the nasal bridge, alae, cheeks, and perinasal folds. The integumentary reaction is manifested by diffuse erythema, edema, excoriation, and bilateral crusted plaques around the nares and nasal tip, extending onto adjacent malar regions. The appearance is consistent with type IV hypersensitivity to topical antiseptics and antibiotic components, producing spongiotic dermatitis with inflammatory cell infiltrates in histology if biopsy were pursued. Clinically, the pattern suggests an allergic contact dermatitis rather than irritant dermatitis due to the localized, well-demarcated distribution and the presence of crusts rather than diffuse burning. Diagnostic significance includes the need to identify and discontinue the offending agent, implement patch testing for chlorhexidine and neomycin, and initiate topical corticosteroids with emollients to accelerate resolution while preventing secondary infection. Potential clinical use cases include dermatology teaching, allergology evaluation, patch-testing workflow, pharmacovigilance of topical agents, and documentation for medicolegal or clinical care pathways. This image is valuable for recognizing perinasal dermatitis and educating about contact allergen avoidance strategies.

High-resolution color clinical photograph of an adult male’s central face focusing on the left cheek and nasal bridge. Modality: clinical photography; technique: close-up, color-accurate digital image captured under diffuse frontal lighting. The facial skin shows marked erythema centered on the malar region with diffuse redness extending toward the nasal ala and bridge. Subtle desquamation and fine scale may be present at the margins. The appearance is characteristic of seborrheic dermatitis, a common inflammatory dermatosis affecting sebaceous-rich areas of the face. The epidermis shows superficial inflammation without ulceration or vesiculation. The lesion margins are ill-defined and confluent, with variable textures from smooth erythema to flaky scales. There is no obvious crusting or infection. The surrounding skin appears unremarkable aside from mild erythema and oiliness. Clinically this image is valuable for dermatology education, differential diagnosis exercises (rosacea, contact dermatitis, atopic dermatitis), and monitoring therapeutic response to topical antifungal agents (ketoconazole) or anti-inflammatory regimens (selenium sulfide shampoo, zinc pyrithione, corticosteroids). In research, it supports studies of seborrheic dermatitis prevalence, severity grading, and cosmetic impact on quality of life. The image emphasizes visual cues used in bedside assessment, documentation, and tele-dermatology triage. Accurate annotation enhances searchability for educational archives and clinical databases for research.

This clinical photograph shows the face of a pediatric patient exhibiting features of head and neck dermatitis (HND). The image displays diffuse erythema across the mid-face, including the cheeks and nasal bridge. Notably, there are erythematous plaques on the superior and inferior eyelids bilaterally, accompanied by mild edema and fine scaling. The perioral region demonstrates significant involvement, characterized by erythema and a localized cluster of pustules with honey-colored crusting lateral to the left oral commissure, suggestive of secondary impetiginization. The lips appear mildly inflamed and dry. This visual presentation is consistent with dupilumab-associated head and neck dermatitis, a known paradoxical reaction in patients treated for atopic dermatitis. The image serves as an educational example of regional dermatitis and secondary bacterial or fungal complications in the context of systemic immunomodulatory therapy. Clinical significance includes recognizing the distribution patterns that distinguish HND from primary flares of atopic dermatitis.

Imaging modality: Clinical photography. Frontal close-up view of the face focusing on the periorbital, malar and nasal regions. The patient is an elderly adult; skin shows diffuse facial erythema with pronounced redness across cheeks and nasal bridge. There are lichenified, crusted plaques along the upper and lower eyelids with yellow-brown crusts adherent to the lash margins. The periorbital skin exhibits mild edema and scale; surrounding skin is dry and sun-damaged. No obvious vesicles; no primary lesion on lips; the nose shows a slightly shiny, telangiectatic surface. The presentation is most consistent with inflammatory dermatitis involving the face, with periorbital blepharitis-like crusting. Differential diagnoses include seborrheic dermatitis (greasy scales, eyelid involvement), atopic dermatitis (lichenoid irritation), contact dermatitis to facial products, rosacea with centrofacial erythema, and psoriasis in the facial milieu. The image documents a chronic, possibly irritant-exposure driven dermatosis with eyelid involvement. Clinical significance includes the need to differentiate dermatitis from infectious etiologies and to guide topical therapy (emollients, mild topical steroids, calcineurin inhibitors) and eyelid hygiene. The image is valuable for education and research on facial dermatitis phenotypes, periorbital dermatitis, blepharitis-related crusting, and sun-damaged skin in elderly patients. High-resolution imaging supports telemedicine, documentation, and longitudinal assessment of treatment response outcomes.