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Mental retardationLarge testicles (macro-orchidism) after the beginning of pubertyLarge body sizeTendency to avoid eye contactHyperactive behaviorLarge forehead or ears with a prominent jawFamily members who have fewer repeats in the FMR1 gene may...
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Individuals with fragile X syndrome appear normal at birth but their development is delayed. Most boys with fragile X syndrome have mental impairment.
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This stage of expansion is called a premutation. People who carry a premutation do not usually have symptoms of fragile X syndrome; although there have been reports of individuals with a premutation and subtle intellectual or behavioral symptoms.
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Individuals with fragile X syndrome appear normal at birth but their development is delayed. Most boys with fragile X syndrome have mental impairment.
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For reasons not fully understood, the CGG sequence in the FMR-1 gene can expand through succeeding generations to contain between 54 and 230 repeats. This stage of expansion is called a premutation.
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Hyperactivity is a state of too much muscle activity. This term is also used to describe a situation when a particular portion of the body is too active, such as when a gland produces too much of its particular hormone.See also: Attention deficit ...
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Prognathism is an extension of the lower jaw(mandible) that occurs when the shape of the face bones cause the teeth to be improperly lined up(misaligned).Prognathism may cause malocclusion(misalignment of the biting surfaces of the upper and lower...
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One of my testicles is much larger than the other. Is this a concern?
Harvey B. Simon, M.D. is an Associate Professor of Medicine at Harvard Medical School and a member of the Health Sciences Technology Faculty at Massachusetts Institute of Technology. He is the founding editor of Harvard Men's Health Watch (www.health.harvard.edu) and the author of six consumer health books, including The Harvard Medical School Guide to Men's Health (Simon and Schuster, 2002) and The No Sweat Exercise Plan. Lose Weight, Get Healthy and Live Longer (McGraw-Hill, 2006). Dr. Simon practices at the Massachusetts General Hospital; he received the London Prize for Excellence in Teaching from Harvard and MIT.
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