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A 25-year-old male asked:

Urinate normal colored urine but it turns black if exposed to air for longer periods of time. i have no other symptom. what is the cause?

1 doctor answer1 doctor weighed in
Dr. Robert Kneece
Specializes in Internal Medicine and Pediatrics
? Alkaptonuria: Alkaptonuria could be the cause and is a genetic disorder so need to see a physician to diagnosis if this is a possibility.Overtime can cause problems with joints if this is the cause and not treated.
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Last updated Jan 26, 2019

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