Genetic disorders that cause excessive height include Marfan Syndrome, characterized by tall, slender bodies with long limbs; Sotos Syndrome (cerebral gigantism) with rapid growth, large head, and distinct features; and Klinefelter Syndrome (XXY), which often leads to taller stature in males. While Gigantism causes extreme height due to excess growth hormone, it's a hormonal condition rather than a primary genetic disorder, though often linked to pituitary tumors, and can be considered in this context.
Gigantism, also called pediatric acromegaly and pituitary gigantism, is a very rare condition that happens when a child or adolescent has high levels of growth hormone (GH) in their body, which causes them to grow very tall.
Marfan syndrome and related conditions are complex and progressive. People can now live a long lifespan, but it may not be pain-free due to the effects of surgery, increased stress on bones and joints, and other complications due to the diagnosis.
Pathological causes for tall statute include endocrine disorders, such as excessive growth hormone secretion, hyperthyroidism, precocious puberty and lipodystrophy, chromosome disorders, such as Trisomy X (47, XXX female), Klinefelter Syndrome (47, XXY), XYY syndrome (47, XYY male) and fragile X syndrome, and syndromes ...
People who are properly diagnosed, adapt their lifestyle, and receive appropriate medical and surgical management can live a normal life span (into the 70s). However, there are no guarantees, and having Marfan syndrome does not mean you might not acquire other conditions that are common in the aging population.
A study of tallness in Marfan people found their mean height was above the 95 percentile for the general population by their third birthday. But not every Marfan is tall and those who are, are not necessarily badly affected.
Abraham Lincoln is the most famous American who had Marfan syndrome. So did Julius Caesar and Tutankhamen.
Signs and symptoms may include:
The best predictor of a child's height is their parents' height or, more specifically, the mid-parental height. The mid-parental height is calculated by adding the mother's and father's height, adding 13 cm (5 inches) for boys or subtracting 13 cm (5 inches) for girls, and then finally dividing by 2.
gigantism. Gigantism happens when too much growth hormone is produced before puberty while the bones are still growing. Children with gigantism grow unusually tall, with very long arms and legs. Acromegaly develops after puberty, when the growth plates are closed.
Someone with Marfan syndrome may have several distinct physical characteristics. They may be: tall and slim with long, thin arms and legs. have loose and very flexible joints.
MFS patients often have low self-esteem, lack of self-confidence, and a large percentage of them are introverted (7). One study found that more than 90% of MFS patients surveyed reported that sexual encounters were negatively affected by their disease (29). This can make it difficult for them to build relationships.
We evaluated the neurodevelopmental status and cognitive ability of 30 school-age children with Marfan syndrome. We found average intellectual (mean full scale IQ = 109.3) and gross motor development.
Genetic testing
A genetic test can be used to examine the gene responsible for Marfan syndrome. It's able to detect an error that causes the syndrome in 99 in 100 of those affected.
Giant People who suffer from Gigantism.
Acromegaly. Acromegaly is a rare condition where the body makes too much of a hormone that can make parts of your body grow bigger.
Mid-parental method
Another way to estimate your child's adult height is to add together the height of both parents and divide it by two. Then, some methods say to add 5 inches if they're a boy and subtract 5 inches if they're a girl; others say to only add or subtract 2 ½ inches.
Your biological father can pass on physical traits such as your biological sex, eye color, height, puberty timing, fat distribution, dimples, and even risk factors for certain health conditions.
Try this little formula for yourself with your parents' heights, and ask your friends and family to do the same. Though it's probable that your real height is close to your predicted height, this isn't always the case. It's entirely possible for two short parents to have a tall child, and vice versa.
People with Marfan syndrome are usually tall and thin with unusually long arms, legs, fingers and toes. The damage caused by Marfan syndrome can be mild or severe. If your aorta — the large blood vessel that carries blood from your heart to the rest of your body — is affected, the condition can become life-threatening.
Other signs can include sudden lung collapse and eye problems, including severe nearsightedness, dislocated lens, detached retina, early glaucoma, and early cataracts. Special tests are often needed to detect these features.
Overall, each of the five facial features (dolicocephaly, enopthalmos, down-slanting palpebral fissures, malar hypoplasia, and retrognathia) was significantly more prevalent among subjects than controls (Table 2).
Autism affects up to 1 in 100 people and the incidence of Marfan syndrome is 1 in 3000 people. There will therefore be those within the Marfan community who have both. However, there is a definite link between autism and Ehlers Danlos (EDS) syndrome- a similar Collagen deficiency (not fibrillin deficiency).
Jonathan Larson eventually achieved global acclaim but posthumously for he died of a misdiagnosed aortic dissection and undiagnosed Marfan syndrome in 1996, just before his smash-hit musical Rent opened. Prior to this he had sought help for chest pain at two New York City accident and emergency rooms.
Skeletal problems that develop as a result of Marfan syndrome can sometimes cause significant pain and discomfort. They may also affect your appearance, which some people find affects their confidence and self-esteem.