If you're not sure what the problem might be, click here to review our list of common symptoms to see if any of them sound like you or your loved one.
A chronic behavioral disorder of childhood onset (by age seven). It is characterized by behavior that is hyperactive, impulsive and/or inattentive. ADHD affects children, adolescents, and adults.
ADHD is most likely is caused by a chemical imbalance in the brain. There also appears to be a genetic factor since ADHD can run in families.
Risk factors for ADHD are:
A state of apprehension, tension, and uneasiness in response to a perceived threat. It is considered normal, when it is temporary during a stressful or uncertain situation. Prolonged, intense, or inappropriate periods of anxiety may indicate an anxiety disorder.
Anxiety may result from many factors including:
A brain disorder that causes extreme swings in mood, energy, and ability to function. The mood changes of bipolar disorder are different from normal ups and downs. They can hurt relationships and cause poor job or school performance.
Bipolar disorder tends to run in families. Specific genes may play a role, but it is not caused by one single gene. Many different genes probably act together. Life factors may also play a role.
Risk factors include:
A mental illness characterized by feelings of profound sadness and lack of interest in enjoyable activities. It may cause a wide range of symptoms, both physical and emotional. Depression is not the same as a blue mood. It can last for weeks, months, or years. People with depression rarely recover without treatment.
Causes may be mental, physical, or environmental, including:
An anxiety disorder of repetitive thoughts and behaviors that make no sense. These obsessive thoughts and compulsive behaviors are extremely difficult to overcome. If severe and untreated, OCD can destroy the ability to function at work, at school, or at home.
OCD is believed to develop from neurobiological, environmental and psychological factors. An imbalance of the brain chemical serotonin probably plays a significant role in the development of OCD.
OCD is associated with other neurological disorders, including:
Those with this disorder show negative, angry, and defiant behaviors much more often than most people of the same age.
Like other psychiatric disorders, ODD results from a combination of genetic, family, and social factors. Children with ODD may inherit chemical imbalances in the brain that predispose them to the disorder.
Risk factors include:
Anxiety that develops after a traumatic event that has caused physical danger. PTSD has also been called shell shock or battle fatigue.
PTSD is triggered by exposure to a traumatic event such as situations in which a person feels intense fear, helplessness or horror. PTSD has been reported in people who experienced:
Not everyone who experiences a traumatic event will develop PTSD. Symptoms of PTSD are more likely to occur if the person has: