What is mental illness definition


Mental illness - Symptoms and causes

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).

Products & Services

  • Book: Mayo Clinic Family Health Book, 5th Edition
  • Newsletter: Mayo Clinic Health Letter — Digital Edition

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.
  • Call a suicide hotline number. In the U.S., call the National Suicide Prevention Lifeline at 1-800-273-TALK (1-800-273-8255) or use its webchat on suicidepreventionlifeline.org/chat.
  • Seek help from your primary care provider.
  • Reach out to a close friend or loved one.
  • Contact a minister, spiritual leader or someone else in your faith community.

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

Helping a loved one

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.

Request an Appointment at Mayo Clinic

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.

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.

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.
  • 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.
  • 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.

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:

  • Pay attention to warning signs. Work with your doctor or therapist to learn what might trigger your symptoms. Make a plan so that you know what to do if symptoms return. Contact your doctor or therapist if you notice any changes in symptoms or how you feel. Consider involving family members or friends to watch for warning signs.
  • Get routine medical care. Don't neglect checkups or skip visits to your primary care provider, especially if you aren't feeling well. You may have a new health problem that needs to be treated, or you may be experiencing side effects of medication.
  • Get help when you need it. Mental health conditions can be harder to treat if you wait until symptoms get bad. Long-term maintenance treatment also may help prevent a relapse of symptoms.
  • Take good care of yourself. Sufficient sleep, healthy eating and regular physical activity are important. Try to maintain a regular schedule. Talk to your primary care provider if you have trouble sleeping or if you have questions about diet and physical activity.

By Mayo Clinic Staff

Related

Associated Procedures

Products & Services

What’s the difference between mental health and mental illness?

Get help now

What’s the difference between mental health and mental illness?

 

Author: Canadian Mental Health Association, BC Division

 

 

‘Mental health’ and ‘mental illness’ are increasingly being used as if they mean the same thing, but they do not. Everyone has mental health, just like everyone has health. As the World Health Organization famously says, “There is no health without mental health.” In the course of a lifetime, not all people will experience a mental illness, but everyone will struggle or have a challenge with their mental well-being (i. e., their mental health) just like we all have challenges with our physical well-being from time to time.

When we talk about mental health, we’re talking about our mental well-being: our emotions, our thoughts and feelings, our ability to solve problems and overcome difficulties, our social connections, and our understanding of the world around us.

A mental illness is an illness the affects that way people think, feel, behave, or interact with others. There are many different mental illnesses, and they have different symptoms that impact peoples’ lives in different ways.

Health isn’t like an on/off switch. There are different degrees of health. People move on a continuum ranging from great or good health to so-so health to poor health to illness or disability. For example, some people have good health and have no problems going about their lives. Some people experience serious health problems, and their poor health has a very negative impact on their life. Some people have serious health problems that last for a long time, and others have serious health problems that resolve very quickly. Many people fall somewhere in the middle—they’re generally in good health, though the occasional problem may come up. Mental health is the same way.

Just as someone who feels unwell may not have a serious illness, people may have poor mental health without a mental illness. We all have days where we feel a bit down, or stressed out, or overwhelmed by something that’s happening in our lives. An important part of good mental health is the ability to look at problems or concerns realistically. Good mental health isn’t about feeling happy and confident 100% of time and ignoring any problems. It’s about living and coping well despite problems.

Just as it’s possible to have poor mental health but no mental illness, it’s entirely possible to have good mental health even with a diagnosis of a mental illness. That’s because mental illnesses (like other health problems) are often episodic, meaning there are times (‘episodes’) of ill health and times of better or good health.

With the right supports and tools, anyone can live well—however they define well—and find meaning, contribute to their communities, and work towards their goals.

Where can I learn more?
  • Wellness issue of Visions Journal
  • HeretoHelp’s mental well-being screening self-test
  • Wellness Module One: Mental Health Matters
  • Mental Illnesses info sheet
  • Tips for Good Mental Health booklet in plain language for lower-literacy readers
  • What is a mental illness? Booklet in plain language for lower-literacy leaders

 

 

About the author

The Canadian Mental Health Association promotes the mental health of all and supports the resilience and recovery of people experiencing a mental illness through public education, community-based research, advocacy, and direct services. Visit www.cmha.bc.ca.

 

 

© 2015 | Back to Q&A | Email us a question

Stay Connected

Sign up for our various e-newsletters featuring mental health and substance use resources.

 

Mental illness - American Medical Clinic

US
Medical Clinic

St. Petersburg, Moika river embankment, 78.

+7 (812) 740-20-90

Content:

Mental illness - in a broad sense, this is a state of the human psyche that is different from normal.

Any disturbance of the mental state is associated with changes in the structure or functions of the brain. They are exogenous, when a person is influenced by external factors - such as various toxic substances, injuries, viruses, etc. Separately, endogenous factors are distinguished - these are hereditary and gene diseases, chromosome disorders, etc.

Mental illness can significantly harm the patient and those around him. That is why they require immediate medical attention. The main difficulty here is to identify the presence of a mental disorder.

List of mental illnesses

Below is a list and description of mental illnesses.

  1. Conditions caused by diseases of the brain - the patient has impaired cognitive functions (learning, thinking, memory), and may also show hallucinations, delusions and mood swings.
  2. Schizophrenia - abrupt changes in the nature of the patient, a change in the sphere of interests and the emergence of unusual hobbies, decreased performance. In the extreme form, the patient has absolutely no sanity and awareness of the events that are happening around.
  3. Neuroses, phobias - a group of psychological diseases of a person that cause panic attacks, paranoia, chronic stress and somatic deviations in a patient when faced with certain objects, situations and phenomena.
  4. Conditions that are caused by violations of physiology - the patient is unable to eat (overeating, anorexia, etc.), sleep (hypersomnia, insomnia, etc.) and all kinds of sexual deviations (increased libido, frigidity, etc.).
  5. Affective disorders - a description of a group of mental illnesses includes baseless cardinal mood swings, all kinds of mania, depressive states of various etiologies and course.
  6. Mental retardation is a congenital mental disorder, which is characterized by a decrease in intellectual functions.
  7. Personality disorders in adulthood - a disorder of sexual preferences (pedophilia, fetishism, etc.), a violation of self-identification by gender (transvestism, transsexualism, etc.), a violation of habits and inclinations (pyromania, gambling, etc.)

This list of mental illnesses is general and describes the most common symptoms to which patients are susceptible. If they are found, seek medical attention immediately. Remember that in the absence of treatment for mental illness, a sick person is dangerous for himself and his loved ones!

See also

  • Endoscopic surgery in St. Petersburg
  • Sign up for a fee to the proctologist

SIGNS OF MENTAL DISORDERS (WHEN TO SEE A DOCTOR)

Signs of mental disorders, and also the frequency of their occurrence is a common question, exciting people in recent years. This is especially true in connection with the fact that the pace of life is steadily growing, and the resources of human nervous system remain unchanged. Very often mental violations develop gradually, stepwise, introducing features into the psyche a person who was previously not peculiar to him, respectively, there are good chances to notice them in time and provide proper medical care.

According to the latest data, mental disorders are detected in 25-30% of the population, that is, one in four in the world. However, it is noteworthy that while 75-80% are sick non-psychotic, mild mental disorders. serious mental illnesses such as schizophrenia occur in 6-17% cases. Alcoholism - in 60%.

It must be remembered that mental disorder is not a sentence, because with sufficient and timely treatment by a specialist, as well as a responsible attitude and attention to their condition, the symptoms of mental disorders can be stopped, (and often the disorder itself can be completely cured), which will help to maintain the former social, professional status and quality of life.

SIGNS

Asthenic syndrome.

This condition may accompany any mental disorders and many of the somatic diseases. Asthenia expressed in weakness, low performance, mood swings, increased sensitivity. A person starts crying easily, instantly gets irritated and loses his temper. Often asthenia is accompanied sleep disturbances, feeling of weakness, increased fatigue, inability to cope with the usual workload, study.

Obsessive states.

A wide range of obsessions includes many manifestations: from constant doubts, unpleasant thoughts, "stuck, spinning in the head", fears with which a person does not able to cope, to an irresistible desire for purity or performing certain unusual actions. Under the control of the obsessive state, a person can return home several times in order to check whether he turned off the iron, gas, water, whether he closed the door with a key. An obsessive fear of an accident can force the patient to perform some rituals that, according to the sufferer, can avert trouble. If you notice that your friend or relative washes his hands for hours, became overly squeamish and is always afraid of getting infected with something - this also obsession. The desire not to step on cracks in the asphalt, joints tiles, avoidance of certain modes of transport or people in clothing a certain color or type is also an obsessive state.

Mood changes.

It is especially important to pay attention not to how much for short-term changes under the influence of momentary factors, how much for mood changes that were not previously characteristic a person, long-term, from 2 weeks or more.

  • Longing, depression, longing for self-accusations, talk about their own worthlessness, sinfulness, about death, lack of future, hope for the best, etc.
  • Unnatural frivolity, carelessness.
  • Stupidity, not characteristic of age and character.
  • Euphoric state, optimism without any basis.
  • Apathy, painful feeling of lack of emotions.
  • Fussiness, talkativeness, inability to concentrate, confused thinking.
  • Irritability, anger, aggressiveness
  • Inability to control emotions, tearfulness, slight breakdowns in conversation
  • natural bashfulness, inability to restrain sexual desires or vice versa, the disappearance of libido, the absence of a morning erection in men

Unusual sensations in the body.

Stinging, burning in the skin, sensations burning, “twisting” pressure in the body, stirring “something inside”, "rustling in the head", the presence of foreign objects in the body - can signal disturbances in the nervous system.

Hypochondria.

Expressed in an obsessive, obsessive search for themselves of serious illnesses and disorders, painful "listening" to the slightest change in the state of your body. At the same time, the patient often does not trust doctors, requires repeated and deeper research, completely focused on finding difficult diseases, requires to be treated as a patient.

Appetite disorders.

It is important to note how sudden increased appetite - "wolfish appetite", and its sharp decrease and perversion of taste preferences. The reason may be as in the disease gastrointestinal tract, and in the general depression of the state, or painful conviction of excessive fullness in its absence. Also it is important if previously tasty food has lost its taste, has become bland, tasteless, "like cardboard."

Illusions

Do not confuse illusions with hallucinations. Illusions force a person to perceive real objects and phenomena in distorted form, while in hallucinations a person feels something that in reality does not exist.

Examples of illusions:

  • the pattern on the wallpaper seems to be an interweaving of snakes or worms;
  • sizes of objects are perceived in a distorted form;
  • the sound of raindrops on the windowsill seems to be the cautious steps of someone terrible;
  • the shadows of the trees turn into terrible creatures crawling up with frightening intentions, etc.

Hallucinations not guess, then susceptibility to hallucinations can manifest itself more noticeable. Hallucinations can affect all the senses, that is be visual and auditory, tactile and gustatory, olfactory and common, as well as combined in any combination. To the sick all he is sees, hears and feels, seems completely real. He may not believe that all this is not felt, not heard, not seen by others. Them he can perceive bewilderment as a conspiracy, deceit, mockery, get irritated at not being understood.

  • Auditory hallucinations human hears various kinds of noise, fragments of words or coherent phrases. Voices can give commands or comment on every action of the patient, laugh at him or discuss his thoughts.
  • Taste and smell hallucinations often cause a sensation of an unpleasant quality: a disgusting taste or smell.
  • For tactile hallucinations, the patient it seems that someone is biting him, touching him, strangling him, that they are crawling on him insects that some creatures are introduced into his body and there move or eat the body from the inside.
  • Outwardly susceptibility to hallucinations expressed in conversations with an invisible interlocutor, sudden laughter or constant intense listening to something. The patient can always to shake off something, to cry out, to examine oneself with preoccupied look or ask others if they see something on his body or in the surrounding space.

Changes in thinking

Previously uncharacteristic overestimation own abilities or abilities, confidence in one's own exclusivity, passion for esotericism, magic, suddenly appeared belief in the supernatural. The rate at which thoughts flow in the head can also change, or become uncomfortably slow, or so fast that sometimes it is very difficult to concentrate on one thought.

Delusional thoughts.

Delusional states often accompany psychoses. Delusion is based on erroneous judgments, and the patient stubbornly maintains its false belief, even if there are obvious contradictions with reality. Crazy ideas acquire significance that determines everything behavior. Delusional disorders can be expressed in an erotic form, or in the conviction of one's great mission, in descent from a noble kind or aliens. It may seem to the patient that someone is trying to kill or poison, rob or kidnap. Sometimes the development of delusional state is preceded by a feeling of unreality of the surrounding world or own personality.

Desocialization.

There are people who are unsociable and unsociable in strength of his character. This is normal and should not arouse suspicion. mental disorders. But if a born merry fellow, the soul company, a family man and a good friend suddenly begins to destroy social connections, becomes unsociable, shows coldness towards those who have recently was dear to him - this is a reason to worry about his mental health. A person becomes sloppy, stops taking care of himself, maybe quit your job for no good reason, abandon your career, former goals and interests, in society can begin to behave shockingly - commit acts that are considered indecent and unacceptable.


Learn more