Attention Deficit Hyperactivity Disorder
ADHD is one of the most common neurobehavioral disorders of childhood and can persist through adolescence and into adulthood.

A person with ADHD has a chronic level of inattention, impulsive hyperactivity, or both such that daily functioning is compromised. The symptoms of the disorder must be present at levels that are higher than expected for a person's developmental stage and must interfere with the person's ability to function in different settings (e.g., in school/work and at home). A person with ADHD may struggle in important areas of life, such as peer and family relationships, and school or work performance.

According to the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR), the symptoms of ADHD fall into three categories: Inattention, Hyperactivity/Impulsivity, and a combination of the two.

Anxiety Disorders
Anxiety disorders are the most common of all the mental health disorders. Considered in the category of anxiety disorders are: Generalized Anxiety Disorder, Panic Disorder, Agoraphobia, Social Phobia, Obsessive Compulsive Disorder, Specific Phobia, Post-Traumatic Stress Disorder, and Acute Stress Disorder.

Mood Disorders
Mood disorders cause a disturbance in mood (state of mind) and include depression and bipolar disorders. Mood disorders can be devastating as, depending on their severity, they can emotionally paralyze people, rendering them unable to work or attend classes or even enjoy the most basic things. Mood disorders can also disrupt appetite and sleep patterns and an individual's sense of well-being. It is not known why some people suffer from mood disorders while others do not.