<s>[INST] Hi,my son is 3 years old weighing 14 kgs. He is having stomach pain after eating then rush to the toilet, his partly walterly stools are dark brown to blackish with mucus. He doesnt like food eversince, he just enjoy liquids ive been stragling to give him solids up to now! [/INST] Hi, the symptoms that your child have, suggest that most probably he has acute gastroenteritis. Acute gastroenteritis results from infection of stomach due to eating food from outside, or taking contaminated water. Give soft diet to child. Prebiotic like enterogermina ampule should be given once a day for 3 days to increase in intestinal immunity. If black stools persist then Stool for rooting microscopy test should be done and examination by doctor should be done so that we may not be Miss any important finding. If black stool persist than antibiotic needs to be started. Take care. </s>