Thanks for posting your query.
Do he has acidic belching/ abdominal discomfort/ gargling sound in abdomen/ abdominal bloating
after taking meals/ blood in stools?
Is he suffering from spasmodic abdominal pain/ constipation/ diarrhea?
With the available described symptoms, there could be possibility of intestinal obstruction
You should consult with internal medicine specialist/ gastroenterologist and should go for thorough check up.
He should also go for complete blood count
, ultrasound imaging, blood sugar, x ray abdomen, renal function and serum electrolytes.
Treatment depends on exact diagnosis.
He should also take complete antibiotic course, antispasmodics and probiotics.
Dr. Mayank Bhargava