There are literally dozens of possible causes of your symptoms.
These include: - Rheumatoid arthritis - Reactive arthritis
(joint inflammation that follows a few weeks after an infection)
- Other diseases marked by joint inflammation (such as arthritis
associated with psoriasis or inflammatory bowel disease) -
Rheumatic fever - Infection (especially viral infections, such
as Parvovirus, certain sexually transmitted diseases, and Lyme
disease) - Joint inflammation caused by uric acid or other
crystals in one or more joints (gout, for example) - Tendonitis
or ligament strain - Endocrine disorders (including thyroid
disease) - Vitamin D deficiency Its impossible to narrow down
this long list without more specific information. Many causes of
joint pain will go away with time. But since youve had symptoms
for over 3 weeks, its worth getting checked out. By reviewing
details of your medical history and a physical exam, your doctor
may be able to narrow down this list quickly. Blood tests and
x-rays may also help. I