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XYY syndrome is a genetic condition found in males only. About 1 in 1,000 boys have it. Newborns with XYY syndrome don't display noticeable physical characteristics. Males normally have one X and one Y chromosome. Alternatively, some doctors suggest getting a chromosome test which can detect an extra copy of the Y chromosome and diagnose whether or not the patient has XYY syndrome… It is caused by the presence of an extra Y chromosome. Tests that may be ordered include However, individuals with this syndrome have one X and two Y chromosomes. Females typically have two X chromosomes (46,XX), and males have … Learn about symptoms, diagnosis, treatment, and more.

Affected individuals are usually very tall.

XYY Syndrome Symptoms. XYY syndrome is a genetic condition that occurs when a male’s genes have an extra Y chromosome. The most common physical trait is being tall, … Many boys and men do not realise they have it. Boys with XYY syndrome — also known as 47,XYY — might be taller than other boys. XYY syndrome is a rare chromosomal disorder that affects males. XYY syndrome may be suspected when a doctor observes signs and symptoms that can be associated with the syndrome such as low muscle tone (hypotonia), speech delay, or learning problems in school. Klinefelter syndrome does not usually cause any obvious symptoms early in childhood, and even the later symptoms may be difficult to spot. Symptoms of Klinefelter syndrome. When children, or even adults, show common symptoms of XYY syndrome, a test is usually recommended. A doctor may then order testing to see if there is a genetic explanation for the signs and symptoms. 48,XXYY syndrome is a condition related to the X and Y chromosomes (the sex chromosomes).People normally have 46 chromosomes in each cell.Two of the 46 chromosomes, known as X and Y, are called sex chromosomes because they help determine whether a person will develop male or female sex characteristics.

Most commonly the diagnosis test involves a specialised blood test, commonly referred to as karyotyping or microarrays. Additional symptoms may include learning disabilities … Many experience severe acne during adolescence.