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.
A condition in the work place that is likely to cause property damage or injury. Simply driving a car puts each one of us in a condition where we are vulnerable to accidents. We are surrounded by hazards that could cause harm, but most of the time we safely negotiate these hazards and arrive at our destination safely.