Alkaptonuria (Black Urine Disease) - Causes, Symptoms, Diagnosis, Treatment and Prognosis
Alkaptonuria or black urine disease is an inherited disorder where a chemical called homogentisic acid accumulates in the tissues and body fluids staining them dark brown. The spine and large joints (hip, knee) are affected leading to pain and stiffness.
United States Dominican Republic Archibald Edward Garrod Ochronotic Arthropathy Kaushik Bharati Drug Administration
Source: medindia.net