20 results
Erythema Nodosum: In this case, E. Nodosum has occured secondary to 
Streptococcal infection.
Photo credit, Josh Fierer,
: In this case, ... Nodosum has occured secondary ... Streptococcal infection ... #Dermatology #SkinRash ... #Photo #UCSDH
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
- Differential Diagnosis ... Tenosynovitis) • Secondary ... Papules & Mucosal Lesions ... ) • Primary HIV ... #Orthopedics #Causes
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
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 ... #Algorithm #causes
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Differential Diagnosis ... hemorrhagic skin lesions ... leakage of RBC's secondary ... SLE) - Viral infections ... reactions • Erythema
Pustular Skin Lesions - Differential Diagnosis Framework

What are pustules?
• Pustules < 5-10 mm + pus
• Material
Pustular Skin Lesions ... - Differential Diagnosis ... Irregular pustules on hands ... Generalized itchy rash ... Secondary syphilis
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
The Stages of Syphilis 

Primary Syphilis 
- The chancre lesion is the hallmark of primary syphilis.
- Rash, pink ... soles in 50% of cases ... tinea-mimicker or heaped-up ... to asymptomatic infection ... Latent #Tertiary #Diagnosis