Home > Health Library > Paranoia
Paranoia is a mental disorder that can make people falsely believe
that others are lying, cheating, using them, or trying to harm them. Or it can
give them an overly large sense of self-importance. People with paranoia can
have either or both of these traits.
Paranoia may occur with several other mental disorders (as in
paranoid schizophrenia) or Alzheimer's disease. It rarely occurs as a mental
illness on its own. It is sometimes caused by using illegal drugs such as
Treatment usually includes professional counseling and may include
Current as of:
November 14, 2014
Kathleen Romito, MD - Family Medicine & Lisa S. Weinstock, MD - Psychiatry
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