What Is an Arthritis Flare? - About Arthritis - Rheumatoid ...Arthritis patients may experience a flare-up of symptoms. An arthritis flare can be very painful and disruptive to usual activities.Causes Of Arthritis Flare Ups | LIVESTRONG.COMCauses Of Arthritis Flare Ups. The term arthritis is used to describe more than 100 conditions. This includes osteoarthritis, rheumatoid arthritis, gout, Lyme disease ...What Causes Arthritis Flare-ups? | LIVESTRONG.COMWhat Causes Arthritis Flare-ups?. Arthritis refers to the inflammation that sometimes occurs in one or more joints in the body. This inflammation may cause pain ...