can robotabs cause itchiness or am i just dry asf lol

i haven't taken any dxm in prolly close to 2 years but im out of other drugs and after a couple weeks i have decided that sobriety is not for me

anyway im out walking on 210mg (im 5'1) and suddenly my scalp got SO itchy i literally hadto find a bench and sit down to scratch 😭😭 i dont remember this being a part of pure dxm?? im baffled. perhaps my bath was too hot?? didn't feel like it tho

or maybe its jyst that im growing my hair out n wearing an ushanka lol.. help :3