8 results
Erythema Annulare Centrifugum (EAC),
This is erythema annulare centrifugum (EAC), one of the “figurate erythemas.” These lesions
classic trailing scale ... Commonly mistaken for tinea ... Most cases are idiopathic ... #clinical #photo ... #dermatology #skinrash
Eczematous Skin Rash - Differential Diagnosis Algorithm
Eczematous - Pruritic/Scaly/Erythematous lesions. Usually poorly demarcated
 • Atopic Dermatitis
Eczematous Skin Rash ... - Differential ... Well-demarcated erythema ... #Eczematous #SkinRash ... Diagnosis #Algorithm #causes
Vesiculobullous Skin Rash - Differential Diagnosis Algorithm
Vesicles Fragile/EasiIy Ruptured - Intraepidermal blisters, possibly crusts/erosions
 - Inflammatory
Vesiculobullous Skin Rash ... - Differential ... blisters, possibly crusts ... Bullous systemic lupus ... Vesiculobullous #SkinRash
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
honey-colored crusts ... • Tinea versicolor ... with site, (e.g„ tinea ... #dermatology #rash ... #differential #
Pustular Skin Rash - Differential Diagnosis Algorithm
Pruritic / Scaly / Erythematous lesions, usually poorly demarcated
Acneiform -
Pustular Skin Rash ... Algorithm Pruritic / Scaly ... drinks • Perioral Dermatitis ... thick honey-yellow crusts ... #Pustular #SkinRash
Moccasin-variety Tinea Pedis 
70 M chronic scaly feet. Over the years: rash has itched only occasionally;
Over the years: rash ... dermatophytes cause ... hyperkeratotic w/ erythema ... allergic eczematous dermatitis ... type #clinical #photo
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Allopecia - Differential ... cellulitis of the scalp ... Disease: Discoid lupus ... Scaling, pustules, crusts ... , erosions, or erythema
Papulosquamous Skin Rash - Differential Diagnosis Algorithm
Erythrematous or violaceous papules & plaques with overlying scale
 •
Papulosquamous Skin Rash ... Herald's atch • Tinea ... soles • Discoid Lupus ... Papulosquamous #SkinRash ... Diagnosis #Algorithm #causes