Cutaneous myiasis is an infestation of the skin by fly larvae, which usually occurs in adults. We present a case of cutaneous myiasis caused by <i>Chrysomya megacephala</i>in a 3-month-old infant with psoriasis vulgaris. In this case report, we highlight the clinical, histopathologic, taxonomic identification, and treatment of cutaneous myiasis occurring in psoriatic skin.