Klinefelter syndrome

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What is Klinefelter syndrome?

Klinefelter syndrome is a chromosomal condition in which males have an extra X chromosome affecting their sexual development. Males with this condition typically have small testes that do not produce enough testosterone.

Common symptoms reported by people with Klinefelter syndrome

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 Klinefelter syndrome

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

Compare treatments taken by people with Klinefelter syndrome

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

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

Who has Klinefelter syndrome on PatientsLikeMe?

  • 1 new patients joined this month
  • 47 say Klinefelter syndrome is their primary condition

Age
Age Proportion # of patients
<20 2
20s 8
30s 18
40s 15
50s 14
60s 6
70+ 0
Age at first symptom
Age at first symptom Proportion # of patients
0-19 years 7
20-29 years 4
30-39 years 2
40-49 years 1
50-59 years 0
60-69 years 0
70+ years 0

Distribution of sex

Sex
Sex Proportion # of patients
Male 61
Female 2

Diagnosis status
Diagnosis status Proportion # of patients
Diagnosed 18
Not Diagnosed 1

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