1. Observe Physical Habits
People with ADD and ADHD often share symptoms, but face different challenges when it comes to physical management of their condition. The classic ADHD child is in perpetual motion. He is often hyperactive, disruptive and unable to control his impulses. While an adult with ADD may not run around the office or jump out of his chair unexpectedly, he may fidget frequently, appear anxious and have difficulty controlling frustration and anger. Those with ADD are often nicknamed daydreamers and their condition is generally manifested in a less physical way. While children and adults with ADD have trouble focusing on tasks, especially those that don't particularly interest them, they are not necessarily physically hyperactive. Instead, they mentally jump from one thought to the next, have organizational difficulties and are forgetful of assignments and commitments.
2. Take Note of Perceived Energy Levels
It stands to reason that people with ADHD have energy to spare. Some studies have shown that ADHD sufferers even sleep fitfully, unable to quiet their mind and body. People with ADD, however, are frequently seen as passive or withdrawn, appearing to be mentally "zoned out." ADHD sufferers have trouble sitting still long enough to complete a task, but those with ADD can remain focused for short periods of time on something that holds their interest. When they lose interest, though, they are drawn back into a daydream state, seeming too sluggish or lethargic to retain their focus.
3. Consider Social Skills
While people with ADHD and ADD aren't antisocial, they have different approaches to interaction. Those with ADHD are generally extroverted and have no trouble drawing people to them. They often find it hard to retain friendships, though, since they lack the focus required to stay connected emotionally. People with ADD, on the other hand, find it difficult to attract friends because they may appear withdrawn or introverted. Once they meet people, however, they have an easier time developing close friendships than their hyperactive counterparts.
4. Look for Co-Existing Emotional Conditions
People--especially children--struggling with ADHD draw attention to themselves through their behavioral problems. Termed hyperactive and disruptive, they are often diagnosed early, since they stand out due to their boundless energy. People with ADD, on the other hand, may slip through the cracks, dealing with their condition for years before being diagnosed. This may be why ADD patients frequently suffer from coexisting emotional conditions, such as depression, anxiety and mood disorders, in conjunction with their attention deficit. It may even be difficult to determine where ADD ends and any coexistent conditions begin, since the disorders share many of the same symptoms and traits.
