11 results
Erythema Nodosum: In this case, E. Nodosum has occured secondary to 
Streptococcal infection.
Photo credit, Josh Fierer,
Erythema Nodosum ... Nodosum has occured secondary ... #Dermatology #SkinRash ... #Erythema #ENodosum ... #Photo #UCSDH
Janeway Lesion: Flat, painless, erythematous lesions seen on the palm of this patient's hand. While
frequently associated
this patient's hand ... endocarditis, in this case ... Photo credit, Josh ... Fierer, M.D. ... #Dermatology #SkinRash
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
Erythemas Summarized ... Erythema ab igne ... on the back of hands ... classic targetoid lesions ... #differential #diagnosis
Reactive Skin Rash - Differential Diagnosis Algorithm
Reactive erythematous with various morphology
 • Urticaria - Firm /
Reactive Skin Rash ... lasts <24hrs • Erythema ... nodules on shins • Erythema ... #Reactive #SkinRash ... #Algorithm #causes
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
Tenosynovitis) • Secondary ... Papules & Mucosal Lesions ... Fifth Disease (Erythema ... Lyme Disease (Erythema ... #Orthopedics #Causes
Eczematous Skin Rash - Differential Diagnosis Algorithm
Eczematous - Pruritic/Scaly/Erythematous lesions. Usually poorly demarcated
 • Atopic Dermatitis
Eczematous Skin Rash ... Scaly/Erythematous lesions ... Secondary to venous ... Well-demarcated erythema ... #Algorithm #causes
Secondary Syphilis Rash
Secondary syphilis is the most contagious of all the stages of this disease, and
Rash Secondary ... the palms of the hands ... resembling rashes caused ... #Rash #Diagnosis ... #Clinical #Photo
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
forehead, chin - Erythema ... perinasal areas - Erythema ... and plaques of erythema ... malleoli - Patches of erythema ... with surrounding erythema
HSV Herpetic Whitlow Infection of the Finger
20 F presents with painful finger, treated w/ oral cephalexin
Diagnosis? ... oral or genital herpes ... virus into the hand ... onset of edema, erythema ... #clinical #photo
Pustular Skin Lesions - Differential Diagnosis Framework

What are pustules?
• Pustules < 5-10 mm + pus
• Material
Pustular Skin Lesions ... Irregular pustules on hands ... Burrows between fingers ... Generalized itchy rash ... Secondary syphilis