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" Osteoarthritis (OA) and rheumatoid arthritis (RA) are often confused, but understanding the differences is key to getting the right care. If you were older than 60 when the pain started, chances are it&amp;#039;s OA, the most common form, which occurs when joint cartilage wears away. RA, on the other hand, happens when your immune system mistakenly attacks the joint lining, causing swelling and inflammation, says Eric Matteson, MD, chairman of rheumatology at the Mayo Clinic. If you have joint pain and any of the following factors apply, see your doctor or a rheumatologist to get screened for RA:   \u2022 You have pain and swelling in many different joints. \u2022 Your pain is mostly in small joints at first, like your wrists and ankles. \u2022 You have frequent low-grade fevers. \u2022 You&amp;#039;re extremely fatigued. \u2022 You&amp;#039;re younger than 50. RA usually starts between ages 30 and 50, and for many women, in their 20s.   Find a rheumatologist at Rheumatology.org. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.womansday.com/health-fitness/womens-health/advice/a5823/whats-causing-your-joint-pain-119939/>