why does my scalp feel tender?

i never used to have this problem but ever since my hair changed textures (due to internal problems) and became kinky, thick, dark and black, dry, etc (pili torti). my scalp has felt very tender and it doesn’t necessarily hurt but it just feels like it’s recovering from a burn..even though i don‘t “burn” my scalp. i do blowdry my hair and straighten it once a week but i never to barely touch the roots.

i don’t do tight hair styles or use gels or anything. i comb and massage my scalp everyday.

do i need to go to a dermatologist or something?

what might be the issue?