8 results
Myositis and Myopathies
Polymyositis 
 • Progressive, symmetric muscle weakness 
 • Elevated CK, +Anti-Jo, +Anti-Mi2
Dermatomyositis
muscle weakness, rash ... uncommon 5-15% of lupus ... myopathy) VA Joint ... differential #diagnosis #comparison ... #rheumatology
Autoimmune Myositis
Necrotizing myopathy is associated with higher CK levels, greater level of muscle weakness, less systemic
Autoimmune Myositis ... less systemic symptoms ... can present with rash ... including heliotrope rash ... Myositis #diagnosis #rheumatology
Joint Disorders - Differential Diagnosis Algorithm
Monoarthritis
 • Septic
 • Crystalline
     - Gout
formation, systemic autoimmune ... with Systemic Lupus ... Erythematosus (SLE ... should have other symptoms ... like “butterfly rash
Drug Induced Lupus vs SLE
Drug Induced Lupus (DIL):
 • Epidemiology: -10% of all lupus cases, drug-dependent,
Constitutional symptoms ... NPSLE rare, Malar rash ... Manifestations: Malar rash ... #sle #comparison ... #table #rheumatology
Clinical Features of Systemic Lupus (SLE)
General: Fever (50%), Depression, Fatigue (75%), Weight loss (50%)
Eye: Sjögrens (15%)
Skin
Features of Systemic Lupus ... (SLE) General: ... Photosensitivity, Butterfly rash ... erythematosus #signs #symptoms ... #diagnosis #rheumatology
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
SLE (Systemic Lupus ... evidence of (fatigue, rash ... eruption - Butterfly rash ... Photosensitive rash ... Photosensitivity • Malar rash
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
vesicular eruption - Joints ... mucositis - Rash ... Presentation - Systemic Symptoms ... vasculitis, and SLE ... differential #diagnosis #rheumatology
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Autoimmune Myositis ... RP-ILD), dermato-rheumatologic ... : • Gottron rash ... Syndrome: Fever, joint ... #rheumatology #