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Klinefelter syndrome

Klinefelter syndrome

Dr. Nitika Makhija
Written By Dr. Nitika MakhijaMDS, BDS
Reviewed By Dr. Rajeev Sharma
MBA, MBBS
Last updated on: 20 Mar 2025 | 03:31 PM (IST)
Also known as XXY male, XX male, XXYY male, XXXY male, and XXXXY male
Overview

Klinefelter syndrome is a genetic disorder in which males are born with an extra X chromosome. 

The key features of KS include small testis, low sperm count or no sperms, low sex drive, learning disabilities and differences in appearance, weak bones, and enlarged breasts. 

Testosterone replacement therapy is the gold standard of treatment. Speech therapy, behavioral therapy, physical therapy, and occupational therapy help manage other associated symptoms.

Early diagnosis helps in the successful preservation of fertility as the sperm count starts declining rapidly after puberty. 

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Overview
Key Facts
Symptoms
Causes
Risk factors
Diagnosis
Specialist to visit
Prevention
Treatment
Complications
Living with
FAQs
References