Hello dear, Your father is suffering from pitta vikar, Don't worry, Take Decoction of fresh Giloy , Mulethi , turmeric, white pepper at morning,Haridra khand 1 tsf bid,Tab Triphala Himalaya 3 tabs at night with Lukewarm water
Next Steps
U can consult online through Practo for further advice
Health Tips
Dip fingers in salt mixed lukewarm water for 5 minutes twice a day for 5 days, Take Madhur Tikta Kashaya ras dominant simple food, Avoid sour curd Kadi spicy food cold drinks alcohol eggs nonveg smoking tobaco etc if so