Depression as a common emotional phenomenon should be differentiated from depression as a disorder.

Quite opposite to depression, a person in manic phase is unusually cheerful, over active, boastful, making big plans with reduced need for sleep.

Bipolar disorder, formerly called manic depression, is a mental health condition that causes extreme mood swings that include emotional highs

Schizophrenia is a chronic brain disorder that affects less than one percent of the U.S. population.

Dementia describes a group of symptoms affecting memory, thinking and social abilities severely enough to interfere with your daily life.

A seizure is a sudden, uncontrolled electrical disturbance in the brain. It can cause changes in your behavior, movements or feelings, and in levels of consciousness.

A headache can be a sign of stress or emotional distress, or it can result from a medical disorder, such as migraine or high blood pressure,

Conditions such as dyspareunia, somatization disorder, conversion disorder, or mood disorders can eliminate pain disorder as a diagnosis.

Gastrointestinal disorders include such conditions as constipation, irritable bowel syndrome,

Experiencing occasional anxiety is a normal part of life. However, people with anxiety disorders frequently have intense,

Mental illness in children can be hard for parents to identify. As a result, many children who could benefit from treatment don't get the help they need.

Substance-induced disorders are conditions or illnesses that are caused by substance use.

They are generally characterized by a combination of abnormal thoughts, perceptions, emotions, behaviour and relationships with others.