Problem by : Is it usually necessary to get a scalp biopsy when determining kinds of alopecia? I recently seen a relatively big bald spot with a modest bit of crimson irritation on the back of my head and one far more in close proximity to the prime of my head. I am 23. Very best response: Response by Irisno sonmetimes they can just appear at your head and know what is incorrect. when they can’t is when they take a biopsy. Know far better? Depart your personal response in the remarks!