5 results
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
Autoimmune diseases ... trigger - Direct skin ... 50% of patients Skin ... #diagnosis #rheumatology ... #comparison #table
Inflammatory Myopathies
Dermatomyositis
 • Onset: Subacute
 • Pattern: Proximal
 • CK: Up to 50X ULN
 • Autoantibodies:
Inflammatory Myopathies ... heliotrope, shawl sign ... exclusion Necrotizing Autoimmune ... differential #diagnosis #comparison ... #rheumatology #
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
Hypocomplementemic Urticarial ... Vasculitis): - Urticaria ... Syndrome: - Ocular inflammatory ... purpura: strong sign ... differential #diagnosis #rheumatology
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
purpura: Strong sign ... Hypocomplementemia: Urticarial ... Hypocomplementemic Urticarial ... syndrome: Ocular inflammatory ... Differential #Diagnosis #Rheumatology
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Diagnosis Framework Inflammatory ... RP-ILD), dermato-rheumatologic ... ) • Anti-Mi2 (skin ... papules and Gottron sign ... ) • Shawl sign