bone, joint, and muscle disorders
Gout
Diagnosis of Gout
Microscopic examination of joint fluid to look for uric acid crystals Sometimes x-rays and/or ultrasonography or special CT scans Doctors suspect gout on the basis of its distinctive symptoms and an examination of the affected joints. The following suggest the diagnosis of gout: Podagra (sudden swelling, pain, and redness of the big toe) Recurring instep inflammation A history of previous flares that began suddenly and resolved spontaneously Many people with gout have a high level of uric acid in the blood. However, the uric acid level may be normal, especially during an acute flare. Many people have high levels of uric acid in the blood but do not have symptoms of gout; therefore, a blood test alone is not sufficient for diagnosis. The diagnosis of gout is usually confirmed when uric acid crystals are identified in a sample of a tophus or in joint fluid removed with a needle ( Joint aspiration (arthrocentesis) ) and viewed under a special microscope with polarized light. X-rays may show joint damage and the presence of tophi. Doctors may also do Gout may mimic other types of arthritis and is sometimes misdiagnosed. 