Attention deficit hyperactivity disorder (ADHD) is the preferred medical term for the biologically-based neurological condition once known as ADD. The symptoms will fall into one of three quantifying categories:

• Primarily Inattentive - disorganization, lack of focus, forgetfulness
  
  
• Primarily Hyperactive - Impulsive - Hyper, constantly on the move
  
  
• Combined

Inattentive ADHD children can appear spacey and apathetic, while adults may present with symptoms that appear more like a mood disorder or anxiety. Those with the hyperactive type of ADHD may appear to bounce off the walls and have lots of energy. But, this description only fits a small percentage of ADHD sufferers.