Pain is a frustrating thing to deal with, especially if you don’t know why it’s happening. Arthritis is a common type of pain that afflicts humans of all ages. The most common type of arthritis is Rheumatoid Arthritis and Osteoarthritis but there are actually over 100 different types of arthritis. Almost 300,000 babies and children have arthritis or a rheumatic condition and about 54 million adults have doctor-diagnosed arthritis.