Paranoia is a symptom of some mental health problems. Many people experience paranoid delusions as part of an episode of psychosis. Physical illness. Paranoia is sometimes a symptom of certain physical illnesses such as Huntington's disease, Parkinson's disease, strokes, Alzheimer's disease and other forms of dementia.

What does it mean when you have really bad paranoia?

Clinical paranoia is more severe. It's a rare mental health condition in which you believe that others are unfair, lying, or actively trying to harm you when there's no proof. You don't think you're paranoid at all because you feel sure it's true.

What happens if paranoia goes untreated?

Untreated psychosis symptoms can impact all areas of a person's life, leading to significant impairment at work, at home, at school, in relationships, and with society at large. People with psychosis may not be able to take care of themselves properly.