ADHD stands for Attention Deficit Hyperactivity Disorder. It causes people to fidget often, and feel as if they're always on the move. People who have ADHD will move none-stop when they're at a table (like for eating). There are multiple types of ADHD, the most common one being ADD (Attention Deficit Disorder) (I think it's the most common one...). ADHD is sometimes combined with a depressive disorder, such as Major Depressive Disorder.
it's a disorder that I don't whish on anyone ,specially children.. there's few different levels of ADHD... my daughter as the highest type ,and let me tell ya ,it ain't fun it's stressfull for the child and the parent ,it's alllllll day ,everyday only stops when they sleel , a lot heppens with ADHD ,and there's nooo cure for it ,only medications stabilizes it