PLEASE WATCH HIM CAREFULLY AND SEE HOW MUCH URINE HE PASSES IF ABOUT 500ML OR SO NO WORRY IF LESS LIKE 30-50 ML THEN GIVE HIM ADEQUATE FLUID BY MOUTH AS DIARRHOEA ALSO REQUIRES MORE HYDARTION IF NOT TAKING ORALLY ADMIT HIM IN AHOSPITAL UNDERCARE OF A PAEDIATRICIAN ,HE NEEDS VERY MUCH ATTENTION AND ROUND THE CLOCK ATTENTION AND SUPERVISION.

Hello Heena ,
Welcome to Healthcare Magic forum.
I understand your concern and appreciate your efforts as a vigilant parent .
Your son is having painless gross hematuria which is when there is enough blood in the urine that you can see it with the naked eye.
When blood is visible to the naked eye, prompt and thorough evaluation is always needed. In children, hospitalization is often necessary to complete the work up.
This is important because most of the times gross painless hematuria associated with history of diarrhoea can be a sign of kidney damage in conditions like hemolytic uremic syndrome.Other causes are idiopathic hypercalciuria, glomerulonephritis or IGA nephropathy, bleeding disorders etc.
I would advise you to consult his pediatrician and preferably a pediatric nephrologist for further evaluation and investigation to confirm the diagnosis.The doctor may order few tests after complete clinical examination of the patient.
Tests that may be done include:
Abdominal ultrasound
Blood creatinine level and renal profile
Complete blood count (CBC)
CT scan of the abdomen
Cystoscopy
Kidney biopsy
Strep test
Tests for sickle cell, bleeding problems, and other blood disorders
Urinalysis&Urine culture
24-hour urine collection for creatinine, protein, calcium.
Not necessary all these, but among these the relevant tests will be ordered by your doctor.
After a work up only can the exact cause be identified and apropriate management started .please do not panic as a mild hematuria may resolve promptly once treatment is started and as of now your son does seem to be in the early phase as per your information.
Hence please do not delay the consultation and the earlier the treatment started better would be the prognosis.
Hope this information is helpful to you.
Wishing your son a speedy recovery.
Regards