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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 …

  3. 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 …

  4. 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.

  5. 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 …

  6. 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 …

  7. 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 …

  8. Attention-deficit/hyperactivity disorder (ADHD) in children

    Mar 7, 2025 · Children who have problems in school but get along well at home or with friends may likely have a concern other than ADHD. The same is true of children who are hyperactive …

  9. Antisocial personality disorder - Symptoms and causes

    Feb 24, 2023 · Antisocial personality disorder, sometimes called sociopathy, is a mental health condition in which a person consistently shows no regard for right and wrong and ignores the …

  10. 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.