Plagiocephaly is a condition characterized by an asymmetrical shape of a baby's head. It often occurs when infants spend too much time lying on their backs, leading to flattening on one side of the skull. This condition is most common in babies under six months old and can be influenced by factors such as premature birth or multiple births. Treatment for plagiocephaly typically involves repositioning techniques to encourage the baby to turn their head in different directions. In some cases, a cranial orthosis, or helmet, may be recommended to help shape the skull as the baby grows. Early intervention is key to achieving the best outcomes.