Vasculitis: Difference between revisions

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== Differential Diagnosis ==
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== Classification ==
   
 
* Small-vessel: often have palpable purpura
 
* Small-vessel: often have palpable purpura
** ANCA-associated
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** [[ANCA-associated vasculitis]]
*** Microscopic polyangiitis: anti-MPO/p-ANCA; pulmonary-renal syndrome
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*** [[Microscopic polyangiitis]]: anti-MPO/p-ANCA; pulmonary-renal syndrome
*** Granulomatosis with polyangiitis: anti-PR3/c-ANCA; pulmonary-renal syndrome
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*** [[Granulomatosis with polyangiitis]]: anti-PR3/c-ANCA; pulmonary-renal syndrome
*** Eosinophilic granulomatosis with polyangiitis: more often anti-MPO; rhinosinusitis, asthma, eosinophilia, glomerulonephritis
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*** [[Eosinophilic granulomatosis with polyangiitis]]: more often anti-MPO; rhinosinusitis, asthma, eosinophilia, glomerulonephritis
 
** Non-ANCA
 
** Non-ANCA
 
*** Immune-complex
 
*** Immune-complex
**** Anti-GBM disease
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**** [[Anti-GBM disease]]
**** Cryoglobulinemic vasculitis: often associated with hepatitis C
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**** [[Cryoglobulinemic vasculitis]]: often associated with [[hepatitis C]]
*** IgA-vasculitis (HSP): abdominal pain, arthritis, rash, sometimes IgA nephropathy
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*** [[IgA vasculitis]] (HSP): abdominal pain, arthritis, rash, sometimes IgA nephropathy
*** Anti-C1q vasculitis (hypocomplementemic urticarial vasculitis
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*** [[Anti-C1q vasculitis]] ([[hypocomplementemic urticarial vasculitis]])
 
* Medium-vessel: typically cause a lacy rash
 
* Medium-vessel: typically cause a lacy rash
** Polyarteritis nodosa: often associated with hepatitis B
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** [[Polyarteritis nodosa]]: often associated with hepatitis B
** Kawasaki disease: usually in children, associated with mucocutaneous lymph node syndrome
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** [[Kawasaki disease]]: usually in children, associated with mucocutaneous lymph node syndrome
 
* Large-vessel
 
* Large-vessel
 
** [[Takayasu arteritis]]: usually aortitis
 
** [[Takayasu arteritis]]: usually aortitis
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* Variable-vessel
 
* Variable-vessel
 
** [[Behçet syndrome]]: recurrent oral and genital ulcers with skin, eye, joint, GI, or CNS involvement
 
** [[Behçet syndrome]]: recurrent oral and genital ulcers with skin, eye, joint, GI, or CNS involvement
** Cogan syndrome: ocular inflammatory lesions
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** [[Cogan syndrome]]: ocular inflammatory lesions
** Primary CNS vasculitis
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** [[Primary CNS vasculitis]]
 
* Associated with a systemic disease
 
* Associated with a systemic disease
** Lupus
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** [[Lupus]]
** Rheumatoid arthritis
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** [[Rheumatoid arthritis]]
** Relapsing polychondritis
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** [[Relapsing polychondritis]]
 
** Etc.
 
** Etc.
   
== Clinical Presentation ==
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== Clinical Manifestations ==
   
 
=== History ===
 
=== History ===
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== Investigations ==
 
== Investigations ==
   
* ** ANA: lupus and other rheumatologic diseases
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* ANA: lupus and other rheumatologic diseases
 
* Complements: lupus and mixed cryoglobulinemia
 
* Complements: lupus and mixed cryoglobulinemia
 
* ANCA: for ANCA-associated vasculitis
 
* ANCA: for ANCA-associated vasculitis

Latest revision as of 09:02, 8 September 2022

Classification

Clinical Manifestations

History

  • Fever, fatigue, weight loss, arthralgias
  • Scleritis
  • Nasal crusting, epistaxis, or upper airway disease: GPA
  • Acute foot or wrist drop
  • Limb claudication, especially unusual patient or location: Takayasu or giant cell arteritis
  • Hemoptysis: ANCA-associated vasculitis
  • Glomerulonephritis: ANCA-associated vasculitis or anti-GBM disease
  • Drug exposure in past 6-12 months
    • Cocaine/Levamasole
    • Hydralazine
    • Propylthiouracil (PTU) more than methimazole (MMI)
    • Minocycline
    • Allopurinol, penicillamine, procainamide, thiamazole, clozapine, phenytoin, rifampicin, cefotaxime, isoniazid, indomethacin
  • Hepatitis B or C
  • Lupus or other rheumatologic diseases

Physical exam

  • Mononeuritis multiplex: sensory or motor neuropathy, which can be subtle, and symmetric or asymmetric
  • Palpable purpura: small-vessel
  • Diminished peripheral pulses: large-vessel vasculitis

Investigations

  • ANA: lupus and other rheumatologic diseases
  • Complements: lupus and mixed cryoglobulinemia
  • ANCA: for ANCA-associated vasculitis
  • CXR if respiratory symptoms
  • EMG if concern for mononeuritis multiplex
  • Lumbar puncture if concern for primary CNS vasculitis