by Rusty Ford
The cause of rheumatoid arthritis (RA) is unknown. However, RA involves an attack on the body by its own immune cells (auto-immune disease). Different cases may have different causes. Infectious, genetic, and hormonal factors may play a role.
Rheumatoid Arthritis Causes - Onset
The disease can occur at any age, but it begins most often between the ages of 25 and 55. The disease is more common in older people. Women are affected 2.5 times more often than men. Approximately 1-2% of the total population is affected. The course and the severity of the illness can vary considerably.The onset of the disease is usually gradual, with fatigue, morning stiffness (lasting more than one hour), diffuse muscular aches, loss of appetite, and weakness. Eventually, joint pain appears, with warmth, swelling, tenderness, and stiffness of the joint after inactivity.
Read more: http://www.arthritis-symptom.com/Rheumatoid-arthritis-symptoms/rheumatoid-arthritis-cause.htm
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