Pyoderma gangrenosum in pregnancy: a case with unusual presentation

Pyoderma gangrenosum (PG) is an uncommon idiopathic chronic ulcerative condition, clinically characterized by initial small pustules which develop into ulcers with typical undermined borders with violaceous hue. In most cases, PG is associated with systemic diseases like inflammatory bowel disease, inflammatory polyarthritis and hematological disorders as paraproteinemia and leukemias. Diagnosis is difficult, mostly resting on the exclusion of other similar conditions, due to lack of pathognomonic histological features. We describe a case of PG in pregnancy not only for the rarity of the association, but also because of some unusual presenting features. We treated the patient by intralesional steroid injection and topical steroid application; the ulcers healed within a month.