الفهرس 
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Abstract
Children with ASD have been shown to experience a range of GI symptoms, with the prevalence shown to be anywhere from 9 to 91%, which is likely due differences in assessment and context. However, it appears that many individuals with ASD suffer from constipation. One association with GI issues in ASD may be the response to stress, since some individuals with ASD show an altered stress response and recent research has shown connections between lower GI symptoms, sensory over-responsivity, and anxiety, as well as altered psychophysiological and endocrine responses to stress-inducing stimuli. These associations suggest that activation of the sympathetic nervous system and the hypothalamic-pituitary axis may be associated with GI disorders in ASD.
Children with ASD who experience GI symptoms also have co-occurring externalizing problems, as studies have shown that children with ASD with co-occurring GI symptoms had increased irritability when compared to those with ASD and no GI symptoms.
So, this study was conducted to evaluate the prevalence of GIT problems in autism spectrum disorder children and the correlation with their behavioral problems.
The study included 50 children with ASD matched with 50 healthy children with the same age and gender.
Cases and controls were comparable in age and gender. Males were predominant in both groups with statistical insignificant difference (p=0.702). ASD group had significantly delayed age of spoon use and toilet training than normal group. ASD group had mean age at disease diagnosis of 4.1 ± 1.0 years with mean CARS score of 35.4 ± 4.0.
All ASD group had significantly higher children suffering from vomiting, constipation,soiling, reflux and abdominal pain than TD group