Vasculitis syndromes rarely occur in association with pregnancy and usually have a poor prognosis. We report the case of a 32-year-old woman, affected by Churg-Strauss syndrome in complete remission at the time of conception, who completed a successful pregnancy. The patient did well except for a recurrence of allergic rhinitis and asthma which apparently responded to an increase in steroid dosage. Clinical implications of vasculitis and pregnancy are discussed.