Allergic granulomatous angiitis (Churg-Strauss syndrome) is a variant of systemic vasculitis characterized by pulmonary and systemic small vessel vasculitis, extra-vascular granulomas and eosinophilia. Clinical features include presence of asthma and/or allergic rhinitis with constitutional symptoms such as fever and weight loss. Multisystem involvement includes pulmonary infiltrations, monoeuritis multiplex, purpura and cutaneous nodules. Churg-Strauss syndrome is an uncommon condition, occur even more rarely in association with pregnancy and usually have a poor prognosis with increased risk of fetal death. In this article a 23-year-old patients who had developed signs and symptoms of the disease during pregnancy is reported. The full-flown picture of disease was revealed in peripartum period.