Alkaptonuria

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What is alkaptonuria?

Alkaptonuria is a rare autosomal recessive disorder caused by homogentisic acid oxidase deficiency, a substance that is part of tyrosine metabolism. Homogentisic acid oxidation products accumulate in and darken skin, and crystals precipitate in joints. Urine exposed to air takes on a dark color.

Common symptoms reported by people with alkaptonuria

Common symptoms
How bad it is
What people are taking for it

Reports may be affected by other conditions and/or medication side effects. We ask about general symptoms (anxious mood, depressed mood, fatigue, pain, and stress) regardless of condition.
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Treatments taken by people for alkaptonuria

Let’s build this page together! When you share what it’s like to have alkaptonuria through your profile, those stories and data appear here too.

Got a question about living with alkaptonuria? Members in the forum might have the answers.

Compare treatments taken by people with alkaptonuria

Let’s build this page together! When you share what it’s like to have alkaptonuria through your profile, those stories and data appear here too.

Got a question about living with alkaptonuria? Members in the forum might have the answers.

Who has alkaptonuria on PatientsLikeMe?

  • 0 new patients joined this month
  • 210 say alkaptonuria is their primary condition

Age
Age Proportion # of patients
<20 15
20s 15
30s 28
40s 41
50s 47
60s 37
70+ 24
Age at first symptom
Age at first symptom Proportion # of patients
0-19 years 43
20-29 years 6
30-39 years 25
40-49 years 7
50-59 years 0
60-69 years 0
70+ years 0

Distribution of sex

Sex
Sex Proportion # of patients
Male 105
Female 104

Diagnosis status
Diagnosis status Proportion # of patients
Diagnosed 99
Not Diagnosed 2

These charts show data from alkaptonuria patients who have completed their condition history
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