The signs and symptoms of underactive thyroid (hypothyroidism) differ extensively, depending on the severity of the hormone deficiency. For a number of people, low levels of thyroid hormone contribute to joint and muscle problems.
Specifically, hypothyroidism may direct to:

Muscle aches, stiffness and tenderness, particularly in the shoulders and hips are linked to hypothyroidism.
- Muscle aches, stiffness and tenderness, particularly in the shoulders and hips
- Joint pain and stiffness
- Swelling of the knee joint and small joints in the hands and feet
- Carpal tunnel syndrome
Treatment of these joint and muscle problems is often focused at the underlying thyroid disorder. Thyroid hormone treatment often helps dramatically. Pain relievers may help, too.
Keep in mind that hypothyroidism can increase your risk of developing other autoimmune diseases, such as rheumatoid arthritis. If pain, stiffness and swelling don’t get better after sufficient thyroid treatment, check with your doctor. He or she may consider other feasible causes of your joint pain.
Article Source: http://www.mayoclinic.com/health/hypothyroidism/AN00069













