Important It is possible that the main title of the report XYY Syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
47, XYY syndrome
Summary 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. Affected individuals are usually very tall. Many experience severe acne during adolescence. Additional symptoms may include learning disabilities and behavioral problems such as impulsivity. Intelligence is usually in the normal range, although IQ is on average 10-15 points lower than siblings.
Introduction In the past, there were many misconceptions about this disease. It was sometimes called the super-male disease because men with this syndrome were thought to be overly-aggressive and lacking in empathy. Recent studies have shown that this is not the case. Although individuals with XYY syndrome have an increased risk for learning disabilities and behavioral problems, they are not overly aggressive, nor are they at an increased risk of any serious mental illness. Because these boys are at a higher risk for having learning disabilities, they may benefit from speech therapy, tutoring, and general awareness of the specific issues they struggle with. Although the first years of school may be more challenging for boys with XYY syndrome, they generally go on to lead full, healthy, and normal lives.
March of Dimes Birth Defects Foundation 1275 Mamaroneck Avenue White Plains, NY 10605 Tel: (914)997-4488 Fax: (914)997-4763 Tel: (888)663-4637 Email: Askus@marchofdimes.com Internet: http://www.marchofdimes.com
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Mental Health America 2000 N. Beauregard Street, 6th Floor Alexandria, VA 22314-2971 USA Tel: (703)684-7722 Fax: (703)684-5968 Tel: (800)969-6642 TDD: (800)433-5959 Email: firstname.lastname@example.org Internet: http://www.mentalhealthamerica.net/
National Alliance on Mental Illness 3803 N. Fairfax Drive Suite 100 Arlington, VA 22203- Tel: (703)524-7600 Fax: (703)524-9094 Tel: (800)999-6264 TDD: (703)516-7227 Email: email@example.com Internet: http://www.nami.org
NIH/National Institute of Mental Health Health Science Writing, Press and Dissemination Branch 6001 Executive Boulevard Room 8184, MSC 9663 Bethesda, MD 20892-9663 Tel: (301)443-4513 Fax: (301)443-4279 Tel: (866)615-6464 TDD: (301)443-8431 Email: firstname.lastname@example.org Internet: http://www.nimh.nih.gov/index.shtml
UNIQUE - Rare Chromosome Disorder Support Group P.O. Box 2189 Caterham Surrey, CR3 5GN United Kingdom Tel: 4401883330766 Fax: 4401883330766 Email: email@example.com Internet: http://www.rarechromo.org
Genetic and Rare Diseases (GARD) Information Center PO Box 8126 Gaithersburg, MD 20898-8126 Tel: (301)251-4925 Fax: (301)251-4911 Tel: (888)205-2311 TDD: (888)205-3223 Internet: http://rarediseases.info.nih.gov/GARD/
Focus Foundation, Inc. PO Box 190 Davidsonville, MD 21035 Tel: (443)223-7323 Fax: (410)798-4801 Email: firstname.lastname@example.org Internet: http://www.thefocusfoundation.org
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