Arthritis
Arthritis is very common but is not well understood. Actually, “arthritis” is not a single disease; it is an informal way of referring to joint pain or joint disease.
There is more then 100 types of Arthritis.The most common types include osteoarthritis (OA), rheumatoid arthritis (RA), psoriaticarthritis (PsA), fibromyalgia and gout. All of them cause pain in different ways.
Intresting fact: More than 50 million adults and 300,000 children have some type of arthritis.