Hair Problem. Help me get through it!

Hi I have been staying in Bangalore for the past 6 years but my hairs have become very thin and baldness has come too. I am already taking a treatment from a doctor, there is a white coloured thing that is deposited into my scalp ( we call it Sikri in hindi ), I am using Teezol-B solution prescribed by the doctor and also the shampoo Ketoconazole (Ketonid) prescribed by the doctor again but while I apply these two, a lot of hair come into my hand and I feel a depression as I am just 24. It's been almost 3 months or 4 may be I have been using RO water to wash hair but this Sikri is not going and also I am using Regaine solution to get the lost hair back. But since this Sikri is not going I m planning to go bald and shave my entire head. Is this a solution to remove the white Sikri deposited in hair. Kindly suggest something. Also I am eating Follihair and Finpecia Tablets. I think I am following everything a doctor suggests. Kindly help me get through it Thanks Sanjay