Intrauterine positional deformity

Plagiocephaly, also known as flat head syndrome, is a condition characterized by an asymmetrical distortion (flattening of one side) of the skull. A mild and widespread form is characterized by a flat spot on the back or one side of the head caused by remaining in a supine position for prolonged periods.Plagiocephaly is a diagonal asymmetry across the head shape. [Source: Wikipedia ]