I've noticed many threads on here about boys with ASD symptoms/dyslexia/ADHD and so on. If your son has been diagnosed with several different issues such as poor muscle tone, language and speech problems, low self esteem, learning difficulties or you have noticed that he doesn't seem to integrate well with other boys, dislikes playing sports such as football and so on, like my son, he may have a chromosome disorder. 1 in 500 live birth boys will have XXY chromosomes, which may lead to a condition called Klinefelter Syndrome - very often this only becomes obvious when the boy hits puberty and may become very tall or develop a more female shape. It is very under-diagnosed as doctors, paediatricians etc are not familiar with it, despite it being relatively common. If you think this could affect your son, check out the Klinefelter Syndrome Association's website for advice and information: www.ksa-uk.net/. It must be stressed that the syndrome affects boys and men in very different ways so must be diagnosed by a blood test. And the dx doesn't mean that these boys cannot live a very happy and normal life! My son was only diagnosed as a teenager, despite many obvious symptoms, but is now in higher education.