What is triple XYY syndrome?

XYY syndrome is a genetic condition in which a male has an extra Y chromosome. There are usually few symptoms. These may include being taller than average, acne, and an increased risk of learning problems. The person is generally otherwise typical, including typical rates of fertility.

What are the symptoms of XYY?

What Are the Signs & Symptoms of XYY Syndrome?

taller than average height.
low muscle tone, or muscle weakness (called hypotonia)
very curved pinky finger (called clinodactyly)
widely spaced eyes (called hypertelorism)

What abnormality is XYY?

XYY syndrome is a rare chromosomal disorder that affects males. It is caused by the presence of an extra Y chromosome. Males normally have one X and one Y chromosome. However, individuals with this syndrome have one X and two Y chromosomes.

Does XYY increase testosterone?

An initial report described men institutionalized for antisocial behavior who were found to have an increased frequency of the XYY karyotype,9 and males in prison with XYY had higher testosterone than controls with healthy age-matched male controls.

What do you need to know about XXYY syndrome?

What is XXYY Syndrome? XXYY Syndrome is the name attached to the cluster of symptoms that arise as a result of the 48,XXYY chromosome pattern.

How is XYY syndrome related to autism spectrum disorder?

There is a higher rate of attention deficit and hyperactivity disorder and a smaller increased risk for having an autism spectrum disorder. XYY syndrome is a rare chromosomal disorder caused by the presence of an extra Y chromosome. Normally, males have 46 chromosomes including one X and one Y chromosome.

How many chromosomes does a male with XYY syndrome have?

Males with XYY syndrome have 47 chromosomes, two of which are Y chromosomes. Most cases of XYY syndrome are due to a cell division error in the sperm prior to conception.

When to consider behavioral assessment for XYY syndrome?

Reading assessment should occur by school age to rule out dyslexia. Behavioral assessment should be considered for children who are having difficulty with symptoms such as impulsivity, poor attention, or social skills. Treatment of XYY syndrome is symptomatic and supportive.

What is triple XYY syndrome? XYY syndrome is a genetic condition in which a male has an extra Y chromosome. There are usually few symptoms. These may include being taller than average, acne, and an increased risk of learning problems. The person is generally otherwise typical, including typical rates of fertility. What are the symptoms…