I Have A Pain In My Head I Feel Like

I have a pain in my head I feel like heat is present in my head one spot in the left side of my head it is very warm any hot thing like tea,cigerette , hot water,sun,and any type of hot thing are give a very pain in my head I do not go anywhere in morning i am in very big problem from 15 years this disease cant diagnosis plzzz help me give me a solution i leave my job job due to this problem please help me please i repuested you please