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Thanks for this query. I can understand your concern regarding your son's autism.
First of all, I would like to tell you, there is a relation between autism and gastrointestinal symptoms like burping, constipation, and loose bowel movements.
A hiatal hernia has a genetic preponderance, but no association with autism. Your son will improve with age. Can you tell me about his ultrasound report? Because grading is related with prognosis and chances of vagus nerve injury. Abdominal swelling may be because of bloating and slight hernia.
A high-fiber diet and breathing exercises will help in early recovery from a hiatal hernia. Yoga and light exercises will help to strengthen the diaphragm.
Hope my answer helped you. Regards.
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