susceptibility, susceptibleness - the state of being susceptible; easily affected

habitus - person's predisposition to be affected by something (as a disease); "the consumptive habitus"

sensitisation, sensitization - the state of being sensitive (as to an antigen)

hypersensitivity - pathological sensitivity

diathesis - constitutional predisposition to a particular disease or abnormality

inclination, tendency, disposition - an attitude of mind especially one that favors one alternative over others; "he had an inclination to give up too easily"; "a tendency to be too strict"

predilection, preference, orientation - a predisposition in favor of something; "a predilection for expensive cars"; "his sexual preferences"; "showed a Marxist orientation"

disposition - a natural or acquired habit or characteristic tendency in a person or thing; "a swelling with a disposition to rupture"