predisposition, sensitivity - susceptibility to a pathogen

cryaesthesia, cryesthesia - hypersensitivity to cold

hypersensitivity reaction - an inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods); severity ranges from mild allergy to severe systemic reactions leading to anaphylactic shock

sensitivity, sensitiveness, sensibility - (physiology) responsiveness to external stimuli; "sensitivity to pain"