Objective To observe the effect of speech therapy on the intelligence of children with developmentalretardation of speech.
目的观察言语治疗对发育迟缓儿童智力的影响。
2
However, muscle spasms, hyperreflexia, refractory epilepsy, developmental delay, and mental retardation are common in children afflicted with the disorder.
然而，肌痉挛、反射亢进、顽固性癫痫、发育迟缓、智力低下是常见的症状。
3
Symptoms can vary from normal to severe developmental delay or mental retardation.