The term arthritis is used to describe more than 100 rheumatic diseases and conditions that affect the joints. Since there are so many different types, healthcare providers often find it easier to separate them into categories, such as non-inflammatory, inflammatory, infectious, and hemorrhagic. You might have some form of arthritis if you experience lasting joint pain, warmth and redness in a joint, or problems using or moving a joint normally. While there is currently no cure for arthritis, treatment options are available.