No specific test exists to diagnose<unk> ; many other diseases can cause inflammation and pain in muscles, but a few tests can help narrow down the cause of the pain. Limitation in shoulder motion, or swelling of the joints in the wrists or hands, are noted by the doctor. A patient's answers to questions, a general physical exam, and the results of tests can help a doctor determine the cause of pain and stiffness. One blood test usually performed is the erythrocyte sedimentation rate (ESR) which measures how fast the patient's red blood cells settle in a test tube. The faster the blood cells settle, the higher the ESR value, which means inflammation is present. Many conditions can cause an elevated ESR, so this test alone is not proof that a person has<unk> . Another test that checks the level of C-reactive protein (CRP) in the blood may also be conducted. CRP is produced by the liver in response to an injury or infection, and people with<unk>  usually have high levels. However, like the ESR, this test is also not very specific.<unk>  is sometimes associated with temporal arteritis, a condition requiring more aggressive therapy. To test for this additional disorder, a biopsy sample may be taken from the temporal artery.
Polymyalgia rheumatica
Giant cell arteritis
Fibromyalgia
Myositis
Lupus erythematosus
Rheumatism
Dermatopolymyositis
Oligoarthritis