Health Topics A-Z

Obsessive-compulsive disorder (OCD) is a mental illness in which a person experiences uncontrollable, recurring, and often distressing thoughts (obsessions), engages in repetitive and excessive behaviors (compulsions), or both. 

Osteoarthritis is the most common type of arthritis. It is one of the leading causes of physical disability in adults.

Osteoporosis is a bone disease that weakens bones and makes them more likely to break.