What is Alkaptonuria?
Alkaptonuria (AKU) is an inherited metabolic disorder characterized by the accumulation of homogentisic acid in the body. It is caused by a deficiency in the enzyme homogentisate 1,2-dioxygenase (HGO). Symptoms of AKU usually appear in early adulthood and include dark urine, joint pain, stiffness, and arthritis.
What is the Triad of Alkaptonuria?
The triad of alkaptonuria is composed of three main features: dark urine, joint pain, and arthritis. Dark urine is the most common symptom of AKU. It is caused by the buildup of homogentisic acid in the body, which turns the urine dark brown or black. Joint pain and stiffness also occur with AKU, usually in the back, hips, and knees. Arthritis is another symptom of AKU, which can cause swelling and joint pain. It is important to note that AKU is not curable, but early diagnosis and proper management can help alleviate symptoms and improve quality of life.