Hi,
It will be very useful for me if you give few more details-
1) How long this problem is there?
2) Does the stool contain blood / mucus / lot of air
3) Approximately how many time a day he passes stools
4) Whether he passes stools after each feeds
If its recent onset, of a few days only, this may be just a food
poisoning which can be treated with antibiotics If it is there for a long time, we have to think other conditions like intolerance to particular food item,
malabsorption conditions, chronic worm infestation etc. If I were your doctor (depending on duration), I would have given a short course of antibiotics, zinc supplementation and a
probiotic to see the response, and plan further workup accordingly. Meanwhile, to control the
rash there- keep the area as dry as possible, apple an emolient (like some diaper creams you used) 3-4 times a days for 7 days.
Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Muhammed Aslam T. K, Pediatrician