Forgetful, twitchy, energetic, flighty, impulsive. 

Kids with ADHD have difficulty paying attention--this can range from being overly hyper in class to simply staring off into space.  They often can't sit still but when they are doing something that they really enjoy can be completely involved in that task to the point of nearly seeming obsessed with it.  However, given a task that they find boring they will never be able to attend to it.  You may find yourself saying something like, "I've just asked you do one thing.  Pay attention to what you are doing and finish that one task."  Something  simple like teeth-brushing becomes an almost impossible task.

ADHD behaviours can seem disruptive but even though the child may seem disobedient, they often are not trying to be bad. 

Inattention

A kid with ADHD may not be able to pay attention to detail.  They can be forgetful.  They tend to lose things and can seem incapable of organizing themselves.

Hyperactivity

A kid with ADHD might never be able to sit still.  They might not be able to stay put in his/her chair.  They may talk your ear off.

Impulsiveness

A kid with ADHD will often blurt out at inappropriate times.  They can interrupt conversations. They may do things, like running towards traffic, that make no sense.

So, if you think your kid has ADHD, it is a good idea to seek professional care.  Sometimes medications can help.  There are also things that you can do at home to help.

• Set very clear and simple rules in your home
• Have a consistent schedule in your home
• You may have to give directions several times in different ways.  Make sure that you are really understood.
• Always Always Always reward good behaviour.

When you see a professional, they will be looking for onset of symptoms before the age of seven and for symptoms to have been presenting themselves for at least six months.