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  1. Psychiatric Disorders: Common Types and Symptoms - Verywell …

    Nov 12, 2025 · A psychiatric disorder is a mental illness that seriously affects thinking, mood, and behavior. Symptoms of psychiatric disorders include confusion, sadness, and trouble …

  2. List of mental disorders - Wikipedia

    The following is a list of mental disorders as defined at any point by any of the two most prominent systems of classification of mental disorders, namely the Diagnostic and Statistical Manual of …

  3. Mental disorders - World Health Organization (WHO)

    Sep 30, 2025 · A mental disorder is characterized by a clinically significant disturbance in an individual’s cognition, emotional regulation, or behaviour. It is usually associated with distress …

  4. Mental Disorders: Types, Causes & Symptoms - Cleveland Clinic

    Jun 3, 2025 · There are many different types of mental disorders, like anxiety, depression and schizophrenia. A mental health disorder, also known as a mental illness or psychiatric …

  5. Mental illness - Symptoms and causes - Mayo Clinic

    Dec 13, 2022 · Mental illness, also called mental health disorders, refers to a wide range of mental health conditions — disorders that affect your mood, thinking and behavior. Examples …

  6. List of Mental Illnesses - Verywell Health

    Dec 7, 2025 · There are many different types of mental illnesses that range in severity. Anxiety and depressive disorders, obsessive-compulsive disorder (OCD), eating disorders, and post …

  7. Mental Disorders - MedlinePlus

    Apr 11, 2024 · Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go.

  8. Mental Health: Types of Mental Illness - WebMD

    Apr 13, 2025 · Learn more from WebMD about the different types of mental illness.

  9. What is Mental Illness? - Psychiatry.org

    More than one in five adults in the U.S. has a diagnosable mental disorder. One in 20 adults has a serious mental illness*. One in six adults has a substance use disorder (including alcohol use …

  10. Mental disorder - Anxiety, Depression, PTSD | Britannica

    Nov 19, 2025 · Psychoses are major mental illnesses that are characterized by severe symptoms such as delusions, hallucinations, disturbances of the thinking process, and defects of …