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.
Accident prevention refers to the plans, preparations and actions taken to avoid or stop an accident before it happens. Accidents can be classified as unplanned and unexpected events giving increased risk of injury, ill health, death and loss of property, damage to environment or any combination of thereof.