Excessively sensitive scalp could be due to scalp inflammation caused due to diet, stress, internal hormonal imbalances or
a bacterial/ fungal infection. The symptoms could be severe itching,redness,pimples, oily scalp
, flaking, crusting causing bleeding. It could be something more serious like temporal arteritis. This is the inflammation and damage to the large blood vessels that supply the head, usually branching in the neck from carotid artery, usually the temporal artery.