13 results
Erythema Nodosum: In this case, E. Nodosum has occured secondary to 
Streptococcal infection.
Photo credit, Josh Fierer,
Nodosum has occured secondary ... Streptococcal infection ... Fierer, M.D. ... #Dermatology #SkinRash ... #Photo #UCSDH
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
- Differential Diagnosis ... Tenosynovitis) • Secondary ... Papules & Mucosal Lesions ... Symmetrical Rash ... ) • Primary HIV
Fever and Rash - Differential Diagnosis Framework
 • Viral: Measles, Infectious Mono (EBV, CMV), Acute HIV,
Viral: Measles, Infectious ... Zoster, Coxsackie (hand ... , Disseminated HSV ... Meningococcal meningitis, Secondary ... Noninfectious: SJS/TEN, Erythema
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
on the back of hands ... Erythema infectiosum ... classic targetoid lesions ... (HSV + Mycoplasma ... #differential #diagnosis
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
Secondary Syphilis Rash
Secondary syphilis is the most contagious of all the stages of this disease, and
Rash Secondary ... treatment, the infection ... the palms of the hands ... #Rash #Diagnosis ... #Clinical #Photo
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 ... #Eczematous #SkinRash
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
Vancomycin induced Leukocytoclastic Vasculitis (LCV) of the Hand
70 M vertebral osteomyelitis on vancomycin and cefepime for
diffuse palpable rash ... Diagnosis? ... polyangiitis, HSP ... #skinrash #dermatology ... #clinical #photo
Rickettsialpox Eschar

40 homeless male from NY admitted with fever, chills, headache, myalgias. Diagnosis?
Rickettsialpox R akari classic
Diagnosis? ... Can have 20-40 lesions ... chickenpox, vzv, hsv ... rakari #clinical #photo ... #skinrash #dermatology