If your child has a bald spot on the top of his head, then, you should get him checked by a dermatologist
to rule out dermatophytosis
If dermatophytosis is diagnosed, he must be treated properly orally and locally with anti-fungal medications.
With regards to his diarrhea: please bare in mind that passing bowel movements up to 3 times/daily is normal and not considered as a disease. However, if the stool is loose or watery, then, should be further evaluated.
If the feces were green, it might be related to passing the stool too frequently (no time for bile to be digested and broken down.
Once cause for green feces could be related to any iron supplement he might be taking or any green vegetables you gave to him. Pepto-bismol
would help, however, I'd advise to:
- take tasectan and probiotics to stop diarrhea
- take o.r.s. to replace electrolytes
- consult pediatrician
and run further tests (culture of stool for bacteria/candida; examination for ova/parasites; abdominal ultrasound
All the best!