alkaptonuria
/ˌælkæptəˈnʊriə/
noun
- A rare genetic disorder in which the body cannot break down certain amino acids, causing urine to turn dark when exposed to air and sometimes leading to joint problems.
- Doctors diagnosed the patient with alkaptonuria after noticing his urine turned black when left standing.
- Babies with alkaptonuria may have dark stains on their diapers that appear after the urine is exposed to air.
- Alkaptonuria is a rare condition that can cause arthritis and other health issues later in life.