Colchicine

Inhibits neutrophil chemotaxis and microtubule assembly

Response rate
Variable; partial responses reported
Onset
Days–weeks
Route
Oral 0.6-1.2 mg daily
Line
1st
IgM effect
Minimal complement effect

Evidence summary

Used as first-line therapy for mild cutaneous UV with arthralgias. Inhibits neutrophil migration to vessel walls, addressing the leukocytoclastic vasculitis. Often used in combination with hydroxychloroquine and dapsone.

Sources (2)

DetailsJachiet M et al. (2015) The clinical spectrum and therapeutic management of hypocomplementemic urticarial vasculitis: data from a French nationwide study of fifty-seven patients · Arthritis RheumatolDOI
DetailsHamid R et al. (2019) Treatment of urticarial vasculitis: A systematic review · J Allergy Clin ImmunolDOI