بسم الله الرحمن الرحيم
(Fatwa: 840/770/SD=9/1438)
Whatever condition of your father you wrote apparently tells that your father is suffering from some illness, you should consult any expert physician. Moreover, recite Surah Fatiha seven times in the morning and evening and blow on your father.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
