Severe hair fall. What else i can do.

I have suffering hair fall since 2 to 3 years. There is no hereditary problem in my family at all. Hairs will get very oily and brittle every morning when I woke up. If I does not wash for 2 days, scalp will get very itchy and fair fall will be more severe. After 2 days hairs will become like as if oil was applied to the hair. Apart from this, I have severe burning eyes, feet, palms during all day and bodyaches at night. All my lab tests were normal including cbc, thyroid, etc, which were ordered. I have prescribed and tried lots of multivitamins, minoxidil, ketaconazole shampoos, oils, and saw palmetto, etc. Nothing is working for me. Any dermatologist I go they prescribe the same medicines with different company names, which does not work at all. No dermatologist could find actual root cause of my hair fall. Plz suggest what else i can do..