Hi.
Thanks for your query.
Noted the history about your son and understood your concerns.
Nausea,
diarrhea, sickness, sulphury burps, large raised patches on skin of back, arms indicate severe intestinal infection along with
septicemia and bacterimia.
I would advise you the following in such a situation:
Take your son to the ER or nearby hospital immediately to check for vitals, clinical evaluation, admission for proper treatment with intravenous fluids and antibiotics and the following investigations:
Blood: CBC, culture and sensitivity.
Tests of stool and urine.
Proper management as advised. Do not treat at home.
Maintain hydration and electrolyte balance as advised by your Doctor.
Boiled and cooled water.
Home-made fresh foods and beverages.