Hi my son age 2years and 3 months weight 12kg he is very hyperactive and he doesn't sleep at night often woke up for 2 or 2half hour and cries unstoppable its very difficult to mange him at that time we don't know what causes him to cry like that he is very adamant at that time he stretches his legs etc..so we consulated  pedestrian so he told it might be ADHD symptomes lets observe it for another 10 to 15 days so my question is how to know my child has ADHD what are the test to taken and how to be treated. Please guide someone.