9 results
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... neuropathy - GI ... against MPO • Complement ... #rheumatology #classification
Highlighted Conditions With Arteritis or Periarteritis of the Coronaries
Takayasu's arteritis:
 - Onset < 40 yrs
 -
Conditions With Arteritis ... multiplex ANCA vasculitis ... Leukocytoclastic vasculitis ... - Ulceration GI ... Diagnosis #Cardiology #Table
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
GCA (Giant Cell Arteritis ... mononeuritis multiplex • GI ... and often causes arthritis ... Elevated AST ALT • Hypocomplementemia ... ) • Hypocomplementemic
Causes of ileitis beyond Crohn’s disease and infections include systemic disorders -spondyloarthropathies, vasculitides, ischemia, and amyloidosis
spondyloarthropathies, vasculitides ... See below for table ... helpful paper complements ... of our GI fellow ... #Differential #Table
IgA Vasculitis – Henoch Scholein Purpura: Pathogenesis and Clinical Findings

 - Infectious Agents - 50% have
IgA Vasculitis – ... Activation of complement ... nausea, vomiting, GI ... Arthralgia's (common), arthritis ... #HSP #IgA #Vasculitis
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
arthralgia, and arthritis ... • Low serum C4 complement ... • Vasculitis ... SLE), rheumatoid arthritis ... diagnosis #types #classification
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
Summary table of ... they activate complement ... Examples: Rheumatoid arthritis ... types #allergy #table ... #classification
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
antigen, leading to complement ... Complement activation ... glomerulonephritis, rheumatoid arthritis ... Hypersensitivity #Types #Classification ... Diagnosis #Reactions #Table
SLE (Systemic Lupus Erythematosus)

Suspect:
Clinical evidence of (fatigue, rash, photosensitivity, inflammatory arthritis, weight loss, and fever) and
anti-Smith Ab, low complements ... Skin Disease Classification ... ANCA-associated vasculitis ... pericardial/abd GI ... RNP antibodies, Complement