13 results
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Rash • Human ... • Rheumatic fever ... gangrenosum • IBD ... lesions • Discoid lupus ... differential #diagnosis
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
decades of life Causes ... symptoms - Headache, fever ... , abdominal pain ... #rheumatology #comparison ... #table
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Red Flags: • Fever ... lesions • Severe pain ... Autoimmune Vasculitis (lupus ... Sjogren's, GPA, EGPA, Microscopic ... cryoglobulins • Skin
Sweet Syndrome

Acute febrile neutrophilic dermatosis (Sweets Syndrome) is a skin condition characterized by fever and inflamed
with systemic disease ... - Rash: multiple ... Causes: - Idiopathic ... ’s syndrome - Lupus ... : - Biopsy - Microscopic
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
centrifugum • A chronic skin ... early localized disease ... PrathitKulkarni #Erythemas #comparison ... #table #differential ... #diagnosis #dermatology
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
Discontinuation of causal ... Evolution: Chronic disease ... #sle #comparison ... #table #rheumatology ... #diagnosis #management
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
weight loss, and fever ... 3rd Decade Skin ... Differential Diagnosis ... Arthritis: • Joint pain ... to: Arthritis, Fever
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
PR3-ANCA): • Microscopic ... tract, and often causes ... mucositis - Rash ... such as systemic lupus ... Vasculitis: • Fevers
Borrelia recurrentis on Peripheral Blood Smear
23M Somali refugee recently arrived w/severe abd pain, confusion and fever
arrived w/severe abd pain ... Mild LFT ↑ This ... The table below ... Infectious Diseases ... recurrentis #BloodSmear #microscopy
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
tract: Abdominal pain ... , mucositis • Rash ... (PR3-ANCA)): Microscopic ... tract, and often causes ... involvement, abdominal pain