why am i so itchy? 😫😢

bex
about a week ago, i started getting itchy on the back of my neck. i assumed it was from my hairspray or something. 😑 then bout 4 days ago, my scalp started to get itchy... like real live itchy af!! 😩 yesterday is when i started itching in other places and today i been itching nearly everywhere! not only my scalp and the back of my neck, but also my chest, upper + lower back, under my boobs, shins, knees, thighs, and arms!!! i can't stop itching and idk what this could be 😭👎🏻 anyone know??