Psoriasis: The most common skin disorder that also affects the joints, including the knees, is psoriasis. Although certainly not all patients with psoriasis will develop joint problems, psoriatic arthritis may cause knee pain and swelling. ...Read more.
Definition of accident. 1  1a : an unforeseen and unplanned event or circumstance Their meeting was an accident.b : lack of intention or necessity : chance They met by accident rather than by design.
By the former, commonly called the act of. God, is meant any accident produced by physical causes, which are. irresistable, such as a loss by lightning or storms, by the perils of the. seas, by inundations and earthquakes, or by sudden death or illness.