updates | March 31, 2026

What are the 7 main mental disorders?

Paranoia.

What is the biggest mental illness?

Impacting an estimated 300 million people, depression is the most-common mental disorder and generally affects women more often than men.

What is psychotic syndrome?

Psychotic disorders are severe mental disorders that cause abnormal thinking and perceptions. People with psychoses lose touch with reality. Two of the main symptoms are delusions and hallucinations.

How many mental illnesses can a person have?

Technically, according to DSM-51, a person can receive more than one personality disorder diagnosis. People who are diagnosed with a personality disorder most often qualify for more than one diagnosis. A person with a severe personality disorder might meet the criteria for four, five or even more disorders!

What is the most rare mental illness?

Apotemnophilia. Also known as body integrity identity disorder, apotemnophilia is characterized by the “overwhelming desire to amputate healthy parts of [the] body,” according to Medscape. Though not much is known about it, this disorder is believed to be neurological.

What is the most popular mental illness?

Anxiety disorders are the most common mental illness in the U.S., affecting 40 million adults in the United States age 18 and older, or 18.1% of the population every year. Anxiety disorders are highly treatable, yet only 36.9% of those suffering receive treatment.

At what age does mental illness start?

Fifty percent of mental illness begins by age 14, and three-quarters begins by age 24.

What is the most common psychotic disorder?

The most common psychotic disorder is schizophrenia. This illness causes behavior changes, delusions and hallucinations that last longer than six months and affect social interaction, school and work.

What does psychotic episode look like?

Determining exactly when the first episode of psychosis begins can be hard, but these signs and symptoms strongly indicate an episode of psychosis: Hearing, seeing, tasting or believing things that others don’t. Persistent, unusual thoughts or beliefs that can’t be set aside regardless of what others believe.

What is the hardest personality disorder to treat?

How is borderline personality disorder treated? Borderline personality disorder has historically been viewed as difficult to treat. But with newer, evidence-based treatment, many people with borderline personality disorder experience fewer and less severe symptoms, improved functioning, and an improved quality of life.

How do you stop a borderline episode?

If you suffer from borderline personality disorder, here are some ways to help cope with the symptoms that can lead to or trigger an episode:

  1. Take a warm shower or bath.
  2. Play music that relaxes you.
  3. Engage in a physical activity.
  4. Do brain teasers or problem-solving activities.
  5. Talk to a sympathetic loved one.

What is the most difficult personality disorder to treat?

What is the easiest mental illness to treat?

The Easiest Psychological Disorder to Treat: Specific Phobia

  • Why do I say “specific” phobias?
  • Have I ever had a specific phobia?
  • After completing part of my training in psychology, I gave myself gradual-exposure treatment for the phobia.
  • The experience was scary at times but effective.

    What is the rarest mental illness?