ADHD stands for Attention Deficit Hyperactivity Disorder. Sadly, many children who never seem to listen, have difficulty sitting still, or not follow instructions well, are often labelled as being undisciplined or lazy.
There are also children who seem to blurt out inappropriate comments at the most inappropriate times, and they are often labeled as troublemakers or criticized for their behavior. Quite often, their behavior is a clear indication that ADHD may be responsible. Typically, those suffering with the disorder have a difficult time staunching their spontaneous responses. They may be abrupt in their speech, movement and attention level. Research shows that the symptoms and signs generally begin to appear before 7 years of age.
It is common for there to be difficulty distinguishing between what is considered normal child behavior and ADHD, as some children are definitely just rude and naughty. Some parents are also willing to lay blame on ADHD rather than their own parenting faults.