I have a really annoying problem - I have dandruff that doesn't shed and come loose. The skin of my scalp literally dies in chunks but doesn't fall off like normal dandruff. I have to scrape it off every single day or else I'm plagued with itching. Some of it is in the form of flakes, others are scales, ranging in color from white to gray to yellow. Is this a medical problem that's been recognized before or am I the first victim of a new dandruff disease? If anyone can give me any help or hope at all, I'd appreciate it. Thank you.