Collapse of femoral head due to reduced blood supply and subsequent remodeling of the femoral head is known as Perthes disease. Usual age of presentation is 4 to 10 years. Here we present a child who developed painful limp on the left lower limb on the early days of his third year of life. It was misdiagnosed as synovitis (transient) of the left hip. There was no resolution of the limp, so more investigations were done and he was later found to have Perthes disease.