When people talk about autism, they often think about a child who is different and may be distressed by their surroundings. Or if the conversation moves beyond childhood, the focus might be about an ...

A new study reveals that opioid analgesic fentanyl may induce autism-like behaviors in young male and female mice. The findings indicate that reduced expression of the gene Grin2b in the anterior ...

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 ...

Repetitive behaviors are not an uncommon part of human experience, but not all repetitive actions serve the same purpose or carry the same meaning. Two types of behaviors that are often confused are ...

Rhesus macaques in U.S. research laboratories frequently pull out their own hair, pace in tight loops, and rock back and forth, behaviors long attributed to the stress of captivity. A study published ...