Dr. John Stuart Hartmann M.D.

IntroductionHallucinations are sensations that people perceive as real, but in reality, are only created by their mind. A person's five senses are often affected. Examples are hearing voices without anyone around or seeing images that are not real. Such symptoms are may due to mental illnesses, drug...

Auditory hallucinations are false perceptions of sound in the absence of an external stimulus. You basically hear voices talking to you or other noises or music, which others around you do not hear. It is a very common symptom among schizophrenics. As a percentage, about 70 percent of schizophrenic...

Behavioral and cognitive therapies are types of psychotherapies that follow scientific principles in assisting individuals how to change their thoughts, feelings, and behavior. They are practical approaches that aim at solving problems.An anxiety disorder may be present in people who experience...

Autistic disorder is defined as the most severe type of autistic spectrum disorder (ASD). It is also called classic autism or Kanner’s Syndrome. This developmental disorder is characterized by challenges with communication, social interaction, and behavior. Autistic people often avoid interaction...

ADHD, or attention deficit disorder, is a commonly undiagnosed mental disorder in adults. According to data provided by The American Psychiatric Association, about 5% of children in the America have ADHD; however, other studies indicate rates as high as 11%. According to other sources, the childhood...

Schizophrenia is a serious disorder which affects how a person thinks, acts and feels. It is best described as a mental disorder which is characterized by abnormal social behavior and failure to understand what is real....