Differential diagnosis and co-existing conditions
- The behaviours are not better explained by another psychiatric disorder (notably Attention-deficit/hyperactivity disorder - F90) or specific developmental disorder of receptive language, deafness or Learning disability - F70.
- It is important to exclude identifiable causes, particularly chromosomal abnormalities, the fragile X syndrome and tuberous sclerosis.
Some three-quarters of children with core autism have a performance IQ below the normal range.
- One-third of children with autism develop epilepsy, often in adolescence or early adult life. The possibility of epilepsy should be carefully investigated.
Last edited: 5/12/2003
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(Page 3 of 8 in this chapter).