35 results
Erythema Nodosum: In this case, E. Nodosum has occured secondary to 
Streptococcal infection.
Photo credit, Josh Fierer,
Erythema Nodosum ... : In this case, ... Images #Clinical #Dermatology ... #SkinRash #Erythema ... #UCSDH
Causes of Erythema Nodosum - Mnemonic

NO cause found in 60% of cases
Drugs (antibiotics e.g., sulfonamides, amoxicillin)
Oral
Nodosum - Mnemonic ... Lofgren's syndrome Ulcerative ... #Erythema #Nodosum ... #Differential #Diagnosis ... #Dermatology #SkinRash
Genital Skin Ulcers - Differential Diagnosis Algorithm
Painful:
 • Herpes simplex
 • Haemophilus ducreyi (chancroid)
 • Behcet's
Genital Skin Ulcers ... Behcet's syndrome • Pemphigus ... genitals #Ulcers #ulcerative ... #skinrash #dermatology ... #Algorithm #causes
Nikolsky's Sign in Toxic Epidermal Necrolysis (TEN)

Nikolsky's sign is a clinical dermatological sign which is present
rubbing of the skin ... syndrome, caused ... differentiating between the diagnosis ... #TEN #Dermatology ... Clinical #SJS #skin
Benign Familial Pemphigus (Hailey-Hailey Disease): Idiopathic recurrent erruptions, in this
case affecting this axilla.

Charlie Goldberg, M.D. -
Benign Familial Pemphigus ... erruptions, in this case ... Goldberg, M.D. - UCSD ... Images #Clinical #Dermatology ... #SkinRash #BFP
Erythema Nodosum - Causes and Differential Diagnosis 
Appearance:  erythematous painful lumps usually 1-6 cm in
Erythema Nodosum ... Diagnosis Appearance ... thighs RARELY ulcerate ... Diagnosis #Dermatology ... #SkinRash #Clinical
Tinea Versicolor: Scaly well demarcated patches caused by fungal skin infection.

Charlie Goldberg, M.D. - UCSD Catalog
demarcated patches caused ... by fungal skin ... Goldberg, M.D. - UCSD ... Clinical #Photo #Dermatology ... #SkinRash #Tinea
Head and Neck Skin Ulcers - Differential Diagnosis Algorithm
Neoplastic:
 • Squamous cell carcinoma
 • Basal cell
Head and Neck Skin ... - Differential Diagnosis ... #Neck #Ulcers #ulcerative ... #skinrash #dermatology ... #Algorithm #causes
Pyoderma Gangrenosum: Autoimmune disorder resulting in a vasculitis which causes slowly progressive 
ulceration of the skin.
vasculitis which causes ... progressive ulceration ... of the skin. ... Clinical #Photo #Dermatology ... #SkinRash #Pyoderma
Vesiculobullous Skin Rash - Differential Diagnosis Algorithm
Vesicles Fragile/EasiIy Ruptured - Intraepidermal blisters, possibly crusts/erosions
 - Inflammatory
Vesiculobullous Skin ... - Differential Diagnosis ... Vesiculobullous #SkinRash ... #dermatology #Differential ... #causes