Arthritis can happen as a result of an injury, like knee pain or wrist pain, for instance. Arthritis can also occur and develop from basic aging and wear and tear of the joints. Many people grow frustrated with the painful disease because it not only causes much discomfort in the joints, but also drastically reduces the amount of mobility a person has. Learn about a new resource, created by Golfing Great Phil Mickelson, to help people with Psoriatic Arthritis.