The most general collection of ailment events; a subcollection of both physiological condition and dysfunctional condition. An instance of ailment condition is a dynamic state of sickness, injury, or physiological impairment. The rationale for construing ailments in this way is the obvious fact that to have an ailment is to undergo an event: an individual ailment has temporal features, it progresses dynamically, and so on. It is not just a matter of being in some static state of unwellness . Subcollections of ailment condition include respiratory disease, heart disease, cancer, motion sickness, poisoning, infection, and injury. If a particular person has an infection, that event is an instance of ailment condition. An ailment condition does not begin before there is an actual, developed sickness or impairment, and thus does not include the event of getting sick or becoming impaired. Also note that each type of ailment, such as infection, is the collection of all cases or instances of individuals suffering from that condition. See also disease.