Hi, in this initial investigations are required. As per Ayurveda it's due to weak digestion & increased pitta in his body . First we need to cover these symptoms with medicines . Along with that I ll suggest few changes in lifestyle & food intakes.
Next Steps
consult online directly
Health Tips
"6 Healthy Lifestyle Choices for a Healthy Bowel Movement" by Dr.Niraj Gujarathi - https://www.practo.com/healthfeed/6-healthy-lifestyle-choices-for-a-healthy-bowel-movement-37526/post