Why do some people nose-pick compulsively? | Nose‑picking compulsion usually starts with a trigger—dry crusts, itch from allergies, deviated septum, or anxiety—and becomes a habit loop: urge → pick → brief relief → stronger urge next time. Repeated picking can injure the delicate Kiesselbach’s area, causing scabs that itch as they heal, perpetuating the cycle. Low humidity, URIs, iron deficiency (itch), and OCD/BDD or body‑focused repetitive behaviors (like nail‑biting) can reinforce it. Fix the

Scabs on My Cat - Causes and Treatment of Skin Conditions in Cats

How Scabs Form and Why They Itch | Britannica