Excessive hairfall and dry hair. Me out.

Hello I m sneha I am losing my hair since july 2017...i loose it like anything..like i will wadh my hair a big bunch of hair will drop itself from scalp.. mostly from parition line and top of scalp. I had taken hormonal,blood,thyroid,testerone test twice,vit D,iron,UCG scan.. all these test.and had these medicines c-roma vit tab,follihair,keraglo eva tab,mintop pro,minoxidil,AFK shampoo,orofer-xt,d-sol,finax 5mg,kera xl serum,keraglo ad lotion and shampoo... Within this alli have observed i had deficincies that got treated maybe i have pattern hairloss but i feel some problem is there in my scalp too.. it will itch and only AFK & keraglo shmapoo was effective as whenever i apply them then i will not loose hair in bunch.please help me out. Thank you