9 results
Erythema Annulare Centrifugum (EAC),
This is erythema annulare centrifugum (EAC), one of the “figurate erythemas.” These lesions
classic trailing scale ... Classically has a rim of scale ... Most cases are idiopathic ... #clinical #photo ... #dermatology #skinrash
Tinea Pedis: Scaly red erruption of the feet caused by fungal dermatitis.

Charlie Goldberg, M.D. - UCSD
Tinea Pedis: Scaly ... erruption of the feet caused ... by fungal dermatitis ... #Dermatology #SkinRash ... #Tinea #Pedis #Foot
Eczematous Skin Rash - Differential Diagnosis Algorithm
Eczematous - Pruritic/Scaly/Erythematous lesions. Usually poorly demarcated
 • Atopic Dermatitis
Eczematous - Pruritic/Scaly ... Well-demarcated erythema ... #Eczematous #SkinRash ... #dermatology #Differential ... #causes
Moccasin-variety Tinea Pedis 
70 M chronic scaly feet. Over the years: rash has itched only occasionally;
dermatophytes cause ... allergic eczematous dermatitis ... fail requiring oral ... type #clinical #photo ... #foot #dermatology
Pustular Skin Rash - Differential Diagnosis Algorithm
Pruritic / Scaly / Erythematous lesions, usually poorly demarcated
Acneiform -
Pruritic / Scaly ... , hot or spicy food ... drinks • Perioral Dermatitis ... #Pustular #SkinRash ... #dermatology #Differential
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
• Atopic dermatitis ... dorsal aspect of foot-shoe ... honey-colored crusts ... breasts, vagina, oral ... ; pruritis #dermatology
Oral Skin Ulcers - Differential Diagnosis Algorithm
Single Ulcer:
 • Traumatic ulcer
 • Angular ulcer
 • Aphthous
stomatitis • Erythema ... Lichen planus • Lupus ... #mouth #SkinRash ... #dermatology #Differential ... #causes
Papulosquamous Skin Rash - Differential Diagnosis Algorithm
Erythrematous or violaceous papules & plaques with overlying scale
 •
with overlying scale ... soles • Discoid Lupus ... Papulosquamous #SkinRash ... #dermatology #Differential ... #causes
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
cellulitis of the scalp ... Disease: Discoid lupus ... • Drugs: Oral ... , erosions, or erythema ... Differential #Diagnosis #dermatology