Vasculitis (small vessel)

# Vasculitis (small vessel)
Patients presents with concern for new small vessel vasculitis given ***. Pauci Immune/ANCA mediated etiologies include GPA, EGPA, MPA, Paraneoplastic, and medications (e.g., sulfa, penicillin, thiazide). Immune complex mediated etiologies (generally decreased C3/C4) include infection (Post-Strep, SBE, Hep C, HIV, Osteomyleitis), connective tissue disease (SLE, RA, Sjogrens, IgG4), Cryoglobulinemia, and IgA/HSP (immune complex with normal complement levels).
- CBC w/ diff, ESR, CRP
- Consider ANA, ANCA (PR3/MPO), C3, C4, UA w/ micro, BCx, HIV, HBV, HCV, ASO
- Imaging per symptomatology and organ involvement
- Rheumatology and Dermatology consult per clinical scenario