Stereotyped movements are common in infants and young children; if the child is not distressed by movements and daily activities are not impaired, diagnosis is not warranted. When stereotyped behaviors cause significant impairment in functioning, an evaluation for<unk>  is warranted. There are no specific tests for diagnosing this disorder, although some tests may be ordered to rule out other conditions.<unk>  may occur with Lesch–Nyhan syndrome, intellectual disability, Autistic Spectrum Disorder, fetal alcohol exposure, or as a result of amphetamine intoxication. When diagnosing<unk> , DSM-5 calls for specification of: * with or without self-injurious behavior; * association with another known medical condition or environmental factor; * severity (mild, moderate or severe). Classification<unk>  is classified in the fifth revision of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) as a motor disorder, in the category of neurodevelopmental disorders. Differential diagnosis Other conditions which feature repetitive behaviors in the differential diagnosis include autism spectrum disorders, obsessive–compulsive disorder, tic disorders (e.g., Tourette syndrome), and other conditions including dyskinesias.<unk>  is often misdiagnosed as tics or Tourette syndrome (TS). Unlike the tics of TS, which tend to appear around age six or seven, repetitive movements typically start before age three, are more bilateral than tics, and consist of intense patterns of movement for longer runs than tics. Tics are less likely to be stimulated by excitement. Children with<unk>  do not always report being bothered by the movements as a child with tics might.
Stereotypic movement disorder
Rhythmic movement disorder
Torsion dystonia
Essential tremor
Periodic limb movement disorder
Tardive dyskinesia
Episodic dyscontrol syndrome
Focal dystonia