The backside of an infant’s skull can become flattened or misshapen as a result of external forces, such as sleeping surfaces, pressing on these bones. Most often this occurs out of necessity to place young babies on their back to sleep until they can reliably roll from front to back, thus reducing chances of SIDS (Sudden Infant Death Syndrome). This can also be due to abnormal head tilt (torticollis), causing the child to lie preferentially on one side of their head. While surgery is not a treatment option for positional plagiocephlay, your craniofacial surgeon will assess your child and help you decide if orthotic helmet treatment could be beneficial.