104 results
Skin Conditions Associated with Joint Pain

Rash
	• Human parvovirus B19 infection

Malar rash
	• SLE
	• Human parvovirus B19 infection
	•
Hypersensitivity vasculitis ... Antiphospholipid-antibody ... syndromeVasculitis ... #differential #diagnosis ... #rheumatology
Vasculitis Involving the Skin - Differential Diagnosis Framework

Primary: 50% Cutaneous Vasculitis: Leukocytoclastic Vasculitis
Secondary: CTD: SLE, RA
the Skin - Differential ... Diagnosis Framework ... Disease • Cogan syndrome ... #skin #dermatology ... differential #diagnosis
Bayesian combination of 4T score with Heparin PF4 antibody titer to obtain the post-test probability of
with Heparin PF4 antibody ... PF4Antibody #Bayesian #Diagnosis ... #Hematology #HITT ... Thrombocytopenia #Laboratory
Small Vessel Vasculitides
 • Granulomatosis with polyangiitis - Granulomatous manifestations (e.g., nasal crusting, destructive sinusitis, pulmonary
Small Vessel Vasculitides ... and Sjogren's syndrome ... • IgA vasculitis ... in absence of skin ... #diagnosis
Autoantibodies and their Disease Associations
ANA - Non-specific; common in SLE, autoimmune hepatitis
Anti-CCP, Rheumatoid factor - RA
Anti-dsDNA
disease c-ANCA - Vasculitis ... polyangiitis U1-RNP antibody ... disease Endomyseal antibody ... Associations #diseases #diagnosis ... #table #rheumatology
Autoantibodies in Rheumatology
 • Lupus (SLE): ANA (anti-nuclear antibody), dsDNA (double-stranded DNA), Anti-Smith, Anti-Ro (SSA) and
(anti-nuclear antibody ... Antiphospholipid Antibody ... LAC) • Sjogren Syndrome ... Polymerase Ill • ANCA Vasculitis ... #diagnosis #associations
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
- Purpura - Skin ... reticularis & skin ... Labs/Diagnosis: ... Antineutrophil cytoplasmic antibody ... Cryoglobulins #diagnosis
Vasculitis - Break down based on vessel size 
Distribution of vessel involvement by large vessel vasculitis,
Vasculitis - Break ... by large vessel vasculitis ... medium vessel vasculitis ... antineutrophil cytoplasmic antibody ... #Diagnosis #Rheumatology
ANA (Antinuclear Antibody) and ANCA (Antineutrophil cytoplasmic antibodies)
 • Systemic lupus erythematosus
   1. Anti-dsDNA
cases • Sjögren syndrome ... ANCA-Associated Vasculitis ... Renal-limited vasculitis ... Antineutrophil #antibodies #diagnosis ... #rheumatology #
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Differential Diagnosis ... purple, hemorrhagic skin ... Kasabach-Merritt syndrome ... Gardner-Diamond syndrome ... #Differential #Diagnosis