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What are 2 warning signs of a mental illness?

Extreme mood changes of highs and lows. Withdrawal from friends and activities. Significant tiredness, low energy or problems sleeping. Detachment from reality (delusions), paranoia or hallucinations.

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Overview

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 of mental illness include depression, anxiety disorders, schizophrenia, eating disorders and addictive behaviors. Many people have mental health concerns from time to time. But a mental health concern becomes a mental illness when ongoing signs and symptoms cause frequent stress and affect your ability to function. A mental illness can make you miserable and can cause problems in your daily life, such as at school or work or in relationships. In most cases, symptoms can be managed with a combination of medications and talk therapy (psychotherapy).

Symptoms

Signs and symptoms of mental illness can vary, depending on the disorder, circumstances and other factors. Mental illness symptoms can affect emotions, thoughts and behaviors.

Examples of signs and symptoms include:

Feeling sad or down

Confused thinking or reduced ability to concentrate

Excessive fears or worries, or extreme feelings of guilt

Extreme mood changes of highs and lows

Withdrawal from friends and activities

Significant tiredness, low energy or problems sleeping

Detachment from reality (delusions), paranoia or hallucinations

Inability to cope with daily problems or stress

Trouble understanding and relating to situations and to people

Problems with alcohol or drug use

Major changes in eating habits

Sex drive changes

Excessive anger, hostility or violence

Suicidal thinking

Sometimes symptoms of a mental health disorder appear as physical problems, such as stomach pain, back pain, headaches, or other unexplained aches and pains.

When to see a doctor

If you have any signs or symptoms of a mental illness, see your primary care provider or a mental health professional. Most mental illnesses don't improve on their own, and if untreated, a mental illness may get worse over time and cause serious problems.

If you have suicidal thoughts

Suicidal thoughts and behavior are common with some mental illnesses. If you think you may hurt yourself or attempt suicide, get help right away:

Call 911 or your local emergency number immediately.

Call your mental health specialist.

Contact a suicide hotline. In the U.S., call or text 988 to reach the 988 Suicide & Crisis Lifeline, available 24 hours a day, seven days a week. Or use the Lifeline Chat. Services are free and confidential.

Seek help from your primary care provider.

Reach out to a close friend or loved one.

Suicidal thinking doesn't get better on its own — so get help.

Helping a loved one

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If your loved one shows signs of mental illness, have an open and honest discussion with him or her about your concerns. You may not be able to force someone to get professional care, but you can offer encouragement and support. You can also help your loved one find a qualified mental health professional and make an appointment. You may even be able to go along to the appointment. If your loved one has done self-harm or is considering doing so, take the person to the hospital or call for emergency help. There is a problem with information submitted for this request. Review/update the information highlighted below and resubmit the form. From Mayo Clinic to your inbox Sign up for free, and stay up to date on research advancements, health tips and current health topics, like COVID-19, plus expertise on managing health. Email ErrorEmail field is required ErrorInclude a valid email address Learn more about Mayo Clinic’s use of data. To provide you with the most relevant and helpful information, and understand which information is beneficial, we may combine your email and website usage information with other information we have about you. If you are a Mayo Clinic patient, this could include protected health information. If we combine this information with your protected health information, we will treat all of that information as protected health information and will only use or disclose that information as set forth in our notice of privacy practices. You may opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail. Subscribe! Thank you for subscribing! You'll soon start receiving the latest Mayo Clinic health information you requested in your inbox. Sorry something went wrong with your subscription Please, try again in a couple of minutes Retry

Causes

Mental illnesses, in general, are thought to be caused by a variety of genetic and environmental factors: Inherited traits. Mental illness is more common in people whose blood relatives also have a mental illness. Certain genes may increase your risk of developing a mental illness, and your life situation may trigger it. Mental illness is more common in people whose blood relatives also have a mental illness. Certain genes may increase your risk of developing a mental illness, and your life situation may trigger it. Environmental exposures before birth. Exposure to environmental stressors, inflammatory conditions, toxins, alcohol or drugs while in the womb can sometimes be linked to mental illness. Exposure to environmental stressors, inflammatory conditions, toxins, alcohol or drugs while in the womb can sometimes be linked to mental illness. Brain chemistry. Neurotransmitters are naturally occurring brain chemicals that carry signals to other parts of your brain and body. When the neural networks involving these chemicals are impaired, the function of nerve receptors and nerve systems change, leading to depression and other emotional disorders.

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Risk factors

Certain factors may increase your risk of developing a mental illness, including:

A history of mental illness in a blood relative, such as a parent or sibling Stressful life situations, such as financial problems, a loved one's death or a divorce

An ongoing (chronic) medical condition, such as diabetes

Brain damage as a result of a serious injury (traumatic brain injury), such as a violent blow to the head

Traumatic experiences, such as military combat or assault

Use of alcohol or recreational drugs

A childhood history of abuse or neglect

Few friends or few healthy relationships

A previous mental illness

Mental illness is common. About 1 in 5 adults has a mental illness in any given year. Mental illness can begin at any age, from childhood through later adult years, but most cases begin earlier in life. The effects of mental illness can be temporary or long lasting. You also can have more than one mental health disorder at the same time. For example, you may have depression and a substance use disorder.

Complications

Mental illness is a leading cause of disability. Untreated mental illness can cause severe emotional, behavioral and physical health problems. Complications sometimes linked to mental illness include:

Unhappiness and decreased enjoyment of life

Family conflicts

Relationship difficulties

Social isolation

Problems with tobacco, alcohol and other drugs

Missed work or school, or other problems related to work or school

Legal and financial problems

Poverty and homelessness

Self-harm and harm to others, including suicide or homicide

Weakened immune system, so your body has a hard time resisting infections

Heart disease and other medical conditions

Prevention

There's no sure way to prevent mental illness. However, if you have a mental illness, taking steps to control stress, to increase your resilience and to boost low self-esteem may help keep your symptoms under control. Follow these steps:

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