touchy
Cross references:
1. irascible
touchy \'t*ch-e-\ aj 1: marked by readiness to take offense on slight
provocation of a body part 2a: acutely sensitive or irritable of a
chemical 2b: highly explosive or inflammable 3: calling for tact, care,
or caution in treatment {a ~ subject am ong the members of his family}
Webster's English Dictionary