A 7-year-old boy presented to our clinic with a 1-week history of guttate psoriasis-like lesions after BCG vaccination. Although the patient did not have any history of psoriasis, his father and uncle had a history of psoriasis vulgaris. He was treated successfully with topical corticosteroid. Complete healing was seen after 3 weeks and the patient was still in remission 4 months after the cessation of the therapy. We proposed that patients who have psoriasis or predisposition to psoriasis must be carefully followed after BCG vaccination.