15 results
Christmas Tree Rash of Pityriasis rosea
 - small oval scaling patches
 - Christmas tree pattern
 -
Christmas Tree Rash ... parallel to lines of skin ... - Differential diagnosis ... nummular eczema, tinea ... #dermatology #photo
Causes of Secondary IgA Nephropathy - Differential Diagnosis Algorithm
 • GI disorders: Celiac disease, Crohn's disease,
- Differential Diagnosis ... Alcoholic Cirrhosis, NASH ... Viruses: HIV, CMV, Hep ... myeloma, Lymphomas, RCC ... #Differential #Diagnosis
Palpable Purpura seen in Henoch Schonlein Purpura (HSP, IgA Vasculitis)

55 year old male on tuberculosis treatment
Schonlein Purpura (HSP ... , IgA Vasculitis ... #IgA #Vasculitis ... #clinical #photo ... #dermatology #skin
Moccasin-variety Tinea Pedis 
70 M chronic scaly feet. Over the years: rash has itched only occasionally;
Moccasin-variety Tinea ... Over the years: rash ... Diagnosis? ... skin of inflamed ... type #clinical #photo
Staphylococcus-associated GlomeruloNephritis - Diagnosis and Management Summary
CLINICAL
 • Nephritic syndrome (Casts)
 • Marked proteinuria (may be
GlomeruloNephritis - Diagnosis ... • Vasculitic rash ... • C3/lgG or IgA ... (esp DM) • "starry ... GlomeruloNephritis #nephrology
Henoch Schonlein Leg Rash - Palpable Purpura
Purpura: Low Platelets or Vasculitis?
45 years old, seen in our
Schonlein Leg Rash ... Henoch-Schonlein purpura (IgA ... later confirmed by skin ... #clinical #photo ... #dermatology #HSP
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Chorioretinitis • Diagnosis ... lesions + toxo IgG ... • CNS PCR 50% ... , may also see skin ... causes #radiology #neurology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
- Differential Diagnosis ... of shoulder and hip ... , neurologic, and ... , mucositis • Rash ... cognitive impairment, neurologic
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
- Differential Diagnosis ... : HSV 1): • Herpes ... Maculopapular rash ... • Uveitis • Rash ... #neurology #meningitis
Powassan Virus Infection
 • Prodrome +/- fine erythematous rash → sudden onset fever, neurological deficits
 •
fine erythematous rash ... deficits • Dx: PCR ... → IgMIgG • ... Virus #Infection #diagnosis ... #management #neurology