WordNet (r) 3.0 (2006):

sensitised
    adj 1: having an allergy or peculiar or excessive susceptibility
           (especially to a specific factor); "allergic children";
           "hypersensitive to pollen" [syn: allergic,
           hypersensitive, hypersensitized, hypersensitised,
           sensitized, sensitised, supersensitive,
           supersensitized, supersensitised]