9 results
diagnosis rheumatology classification differential management allergy cryoglobulinemia cryoglobulins erythematosus glomerulonephritis henochscholeinpurpura hsp huv hypersensitivity hypocomplementemic iga igg4 lupus progressive rapidly
Pathophysiology of Hypocomplementemic Urticarial Vasculitis C1q/anti-C1q antibiody -> Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Pathophysiology ... of Hypocomplementemic ... Complex Formation - Complement ... TerrierBen #Hypocomplementemic ... #HUV #Pathophysiology
Vasculitis and Vasculitides - Differential Diagnosis Framework When to Consider Vasculitis: • Purpura, ischemic skin lesions •
and often causes arthritis ... often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... Glomerulonephritis, arthritis ... against MPO • Complement
Cryoglobulinemia Summary Cryoglobulins: • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
Types: • Type ... arthralgia, and arthritis ... • Low serum C4 complement ... • Vasculitis ... SLE), rheumatoid arthritis
Hypersensitivity Types and Their Mechanisms Type I - lgE - Soluble antigen - Allergen-specific lgE antibodies bind
Hypersensitivity Types ... antigen, leading to complement ... Complement activation ... glomerulonephritis, rheumatoid arthritis ... Classification #Pathophysiology
Rapidly Progressive Glomerulonephritis (RPGN) RPGN has three primary pathophysiologic causes differentiated by immunofluorescence Immune Complex Mediated (granular staining):
three primary pathophysiologic ... staining): • Low Complement ... Idiopathic • Normal Complement ... Glomerulonephritis #Vasculitis ... differential #diagnosis #algorithm
IgA Vasculitis – Henoch Scholein Purpura: Pathogenesis and Clinical Findings - Infectious Agents - 50% have
IgA Vasculitis – ... Activation of complement ... Arthralgia's (common), arthritis ... #HSP #IgA #Vasculitis ... HenochScholeinPurpura #Pathophysiology
SLE (Systemic Lupus Erythematosus) Suspect: Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
anti-Smith Ab, low complements ... ANCA-associated vasculitis ... Kikuchi disease • Type-I ... • Mesenteric vasculitis ... RNP antibodies, Complement
IGG-4 RELATED DISEASE WHAT? • A chronic, immune-mediated fibroinflammatory disease with tumefactive infiltration of IgG4+ plasma cells
dysfunction PATHOPHYSIOLOGY ... • Pancreas: Type ... aortitis, mimics vasculitis ... - ↑ IgE, ↓ complement
Sjogren's Syndrome Overview Epidemiology: • F > M: 9:1 • 5-6th Decades (can be any age) Autoimmune exocrinopathy multisystemic disease
Cytopenia: 2% • Hypocomplementemia ... IV RTA, TYPE I ... ) • Cutaneous vasculitis ... : 2% Systemic Vasculitis ... Arthralgia and Arthritis
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