ANSWER:

You must not abandon prayer. As long as you pray it within its allotted time, this is permissible. Make ruqyah for the headaches. You also need to do cupping as this is one of the best treatments for migraines.

What is Ruqyah and how one should do it?

 

I suffer from severe headache/migraine & its so bad that at times I have to keep my room in darkness because light hurts eyes Im able to pray sitting or when it becomes unbearable, I pray sitting/laying down with gesture. Is it permissible for me to leave salat until I feel better, because though I pray, it is without concentration & khushu because of the pain.