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  1. Mental illness - Symptoms and causes - Mayo Clinic

    Dec 13, 2022 · A wide range of mental health conditions affect mood, thinking and behavior and can make you miserable and cause problems in daily life.

  2. Personality disorders - Symptoms and causes - Mayo Clinic

    Jul 14, 2023 · A personality disorder is a mental health condition where people have a lifelong pattern of seeing themselves and reacting to others in ways that cause problems. People with personality …

  3. Mental illness - Diagnosis and treatment - Mayo Clinic

    Dec 13, 2022 · A personality disorder involves a lasting pattern of emotional instability and unhealthy behavior that causes problems in your life and relationships. Examples include borderline, antisocial …

  4. Mood disorders - Symptoms and causes - Mayo Clinic

    Jan 31, 2024 · Mood disorders are caused by traits passed down to you, as well as environmental factors and life events. Environmental factors can include, for example, childhood experiences and …

  5. Mental illness in children: Know the signs - Mayo Clinic

    Jan 27, 2024 · It can be hard to tell the difference between typical behavior and symptoms of mental illness in children. Find out what to look for and when to act.

  6. Oppositional defiant disorder (ODD) - Symptoms and causes

    Jan 4, 2023 · If you think your child may have ODD or other problem behavior, or you're concerned about your ability to parent a challenging child, seek help from a child psychologist or a child …

  7. REM sleep behavior disorder - Diagnosis and treatment - Mayo Clinic

    Jan 18, 2018 · REM sleep behavior disorder is a sleep disorder in which you physically and vocally act out vivid, often unpleasant dreams during REM sleep.

  8. Cognitive behavioral therapy - Mayo Clinic

    Feb 26, 2025 · Cognitive behavioral therapy is used to treat a wide range of mental health concerns. It's often the preferred type of psychotherapy because it can quickly help you learn about and cope with …

  9. REM sleep behavior disorder - Symptoms and causes - Mayo Clinic

    Jan 18, 2018 · REM sleep behavior disorder is a sleep disorder in which you physically and vocally act out vivid, often unpleasant dreams during REM sleep.

  10. Behavioral Neurology - Overview - Mayo Clinic

    Nov 8, 2025 · Our neurology physician-scientists and other researchers trained in behavioral disorders study all aspects of these conditions, including risks, predictors, prevention, diagnostic tests, and …