Stereotypic movement disorder is a motor disorder that develops in childhood, typically before grade school, and involves repetitive, purposeless movement. Examples of stereotypic movements include ...

Your little one is moving and grooving and learning more about how their body works with each passing day. Some of your infant’s movements may seem organized; others, not so much. Arm flapping may ...

Rett syndrome affects girls almost exclusively, occurring in 1 of every 10,000 to 15,000 births and usually diagnosed by age 2. It is characterized by developmental regression, autistic traits, slow ...