- Autism: impaired social interaction/communication/interests
- Prevalence: 0.4% of the general population (although I have seen wild variations of this number)
- More common in males than females (5 to 1)
- Symptoms generally seen before the age of 3
- Social sx: lack of peer relationships/failure to use non-verbal social cues
- Communication sx: absent or weird speech
- Behavioral sx: preoccupation with repetitive activities, rigid adherence to purposeless rituals, mental retardation (present in 75% of patients with autism), no parent-child bond
- Physical exam: generally normal, may see results of self-injurious behaviors (biting/head banging)
- Tx: family counseling, special education, antipsychotics can be considered for agitation
Source: Psychiatry for Medical Students and Residents by Nabell Kouka, MD, DO, MBA
Pic source: http://peteking.house.gov/issues/autism