Klinefelter Syndrome

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Klinefelter syndrome can cause problems with learning and sexual development in guys. It's a genetic condition meaning a person is born with it. Klinefelter syndrome only affects males. It happens because of a difference deep inside the body's cells, in microscopic strings of DNA what make up genes called chromosomes. Chromosomes are tiny, but they play a huge role in who we are — including deciding our gender, how we look, and how we grow. Doctors sometimes call Klinefelter syndrome XXY. When puberty starts and guys' bodies begin to make sex hormones, boys with Klinefelter usually don't produce as much of the male hormone testosterone.

Got a symptom but not sure what's causing it? Use our award-winning Brainy Symptom Checker to find out — it's free! All of Healthily's articles undergo medical safety checks to attest to that the information is medically anodyne. Sexual excitement, or arousal, is after you feel physical, mental and affecting excitement when you have sexual acquaintance with someone, see something that arouses you, or have sexual thoughts before desires. When you get sexually aroused, the changes that happen to your body are preparing you for the sexual pleasure of an orgasm — also known as climaxing — after that ejaculation or coming. The first act of the sexual response cycle is when you get sexually excited a propos something or someone. Your brain triggers a chemical process that leads en route for your penis getting erect, or hardening. This happens because blood flows addicted to your penis, causing the tissue all the rage it to expand and harden. All through this stage, the bag of casing that holds your testicles scrotum additionally gets tighter.