3. Inflammatory Arthritis
Although anyone can develop synovitis, it so is most commonly seen in people who have some form of arthritis. Inflammatory arthritis causes excessive growth of the synovium. This is an immune response that is not normal and can exacerbate the condition. When your body sees its own natural tissues or cartilage as a dangerous substance, it will attack those tissues. The body views extra growth of the synovium as a foreign substance in the body which makes your immune system do everything possible to dissolve the cartilage.
This immune response can trigger synovitis which will eventually lead to the loss of extra cartilage and your natural cartilage. When the joints no longer have adequate cushioning due to cartilage loss and synovitis, the surfaces of the joint can be damaged. This is what causes pain and stiffness that is common in those suffering from inflammatory arthritis. Synovitis is an additional side effect or complication of inflammatory arthritis.