Hi, From last 10 years there is dandruff like thing on my scalp but slowly it has grown to thick flakes which is stuck on my scalp...even after hair wash it is not coming off. The scalp is itchy and hair fall is happening a lot. The thick flakes are like patches and covered overall scalp. I have taken homeopathy or home remedies but nothing worked . Please let me know what it is and is it serious?? (I use Erica shampoo generally) Pls reply to this query Pics are attached although it is not much clear but like it thick, little yellowish in color and stucked badly on my scalp between my hair.