The mild itch had already exploded into spasms of an intense sensation — it ... face, neck, upper back, shoulders and arms. Hartman suspected that an M.R.I. would show something there ...

Prurigo nodularis (PN) is a chronic (long-term) skin condition that causes intense itching and firm bumps on the outer ... The most common places people experience pruritus with PN are the arms and ...