2. Taller than the average height
is a symptom that both men and teenage boys experience. Most people ignore the height of a man, especially men are expected to be tall. Most parents get excited when their son is tall because they think of him playing all types of sports. In the United States, the average height of a man is 5’9. There are men taller than 5’9 and are healthy. It should cause some concern when a teenage boy is much taller than the other boys in his class.
Parents should look to see if there is a history of tall men in the family. If not, parents should consider taking their son to a doctor who can do some tests to see if he has Klinefelter syndrome. In some cases, the height situation could have skipped a few generations. Since Klinefelter syndrome isn’t inherited, he may be the first one who has ever had the condition in the family.