eczema nummular

Diagnosis: eczema nummular

Case submitted by Murtuza Bandukwala to the dermRounds community.

Clinical Presentation

Clinical photograph(s) submitted for peer review and discussion.

Clinical History

Submitted by Murtuza Bandukwala. Originally posted July 1, 2010.

Treatment

See case discussion.

Differential Diagnosis

• Psoriasis • Contact dermatitis • Scabies • Tinea corporis • Seborrheic dermatitis • Mycosis fungoides • Drug eruption

Key Learnings

• "Eczema" is a clinical pattern, not a single diagnosis — encompasses multiple subtypes • Impaired skin barrier function is central to pathogenesis • Spongiosis (intercellular edema in epidermis) is the histological hallmark • Acute: vesicles, weeping. Subacute: erythema, scale. Chronic: lichenification, fissuring • Superinfection with S. aureus is common and may cause flares

Tags: eczema, nummular, murtuza bandukwala