Hairfall. Falling, can someone help me!

I am  having hairfall without combing my hair will fall. I am having hair growth but hair are falling in very large quantity and if i comb then there will be much more hairfall. I am having small lumps on my head which pains when touched and when i touche my scalp it pains a bit as well and something small white looking like dandruff is also there on my scalp for which a doctor told me to use candid tv. I have taken previously many medications and also did a check  as doctor told me to  ,to see if I have thyroid it was found that my prolactin is higher and vitamin b 12 deficiency is there , some doctors also told her that it is telogen effluvium but i is not  sure why hair is falling, can someone help me regarding it? Because it has been around 8 months