Mental illness is any disease or condition affecting the brain that influence the way a person thinks, feels, behaves, and/or relates to others. Mental illness is caused by heredity, biology, psychological trauma and environmental stressors. Read more: Mental Illness Article
Multimedia: Slideshows, Images & Quizzes
-
What's Schizophrenia? Symptoms, Types, Causes, Treatment
What is the definition of schizophrenia? What is paranoid schizophrenia? Read about schizophrenia types and learn about...
-
What Is Bipolar Disorder? Symptoms, Manic Episodes, Testing
Bipolar disorder (formerly "manic depression") causes extreme mood shifts and manic episodes. Learn about bipolar 1, bipolar 2,...
SLIDESHOW
Myths and Facts About Therapy See SlideshowRelated Disease Conditions
-
Genetic Diseases
The definition of a genetic disease is a disorder or condition caused by abnormalities in a person's genome. Some types of genetic inheritance include single inheritance, including cystic fibrosis, sickle cell anemia, Marfan syndrome, and hemochromatosis. Other types of genetic diseases include multifactorial inheritance. Still other types of genetic diseases include chromosome abnormalities (for example, Turner syndrome, and Klinefelter syndrome), and mitochondrial inheritance (for example, epilepsy and dementia).
-
Paraphilia
Paraphilias are characterized by sexual fantasies, urges, and behaviors involving unusual objects or activities. Exhibitionism, fetishism, frotteurism, pedophilia, sadism, transvestitism, voyeurism, and sexual masochism are examples of paraphilias. Counseling, therapy, and medications are used in the treatment of paraphilias.
-
Symptoms of 12 Serious Diseases and Health Problems
Learn how to recognize early warning signs and symptoms of serious diseases and health problems, for example, chronic cough, headache, chest pain, nausea, stool color or consistency changes, heartburn, skin moles, anxiety, nightmares, suicidal thoughts, hallucinations, delusions, lightheadedness, night sweats, eye problems, confusion, depression, severe pelvic or abdominal pain, unusual vaginal discharge, and nipple changes. The symptoms and signs of serious health problems can be caused by strokes, heart attacks, cancers, reproductive problems in females (for example, cancers, fibroids, endometriosis, ovarian cysts, and sexually transmitted diseases or STDs), breast problems (for example, breast cancer and non-cancer related diseases), lung diseases (for example, chronic obstructive pulmonary disease or COPD, lung cancer, emphysema, and asthma), stomach or digestive diseases (for example, cancers, gallbladder, liver, and pancreatic diseases, ulcerative colitis, or Crohn's disease), bladder problems (for example, urinary incontinence, and kidney infections), skin cancer, muscle and joint problems, emotional problems or mental illness (for example, postpartum depression, major depression, post-traumatic stress disorder (PTSD), mania, and schizophrenia), and headache disorders (for example, migraines, or "the worst headache of your life), and eating disorders and weight problems (for example, anorexia or bulimia).
-
What Are 4 Major Causes of Depression?
Depression is not a condition that has one specific cause. It can happen for many different reasons and have many triggers. Depression is a serious condition with a spectrum of diagnoses and a wide range of severity. Depression is a common yet serious mood disorder. The four types of depression include major depression, bipolar disorder, persistent depressive disorder and seasonal affective disorder.
-
Depression
Depression is an illness that involves the body, mood, and thoughts and affects the way a person eats and sleeps, the way one feels about oneself, and the way one thinks about things. The principal types of depression are major depression, dysthymia, and bipolar disease (also called manic-depressive disease).
-
Narcissistic Personality Disorder
Narcissistic personality disorder (NPD) is a dramatic personality disorder that is characterized by a distorted self-image, preoccupation with success and power, and an abnormal love of self, which mask insecurity and a fragile self-esteem. Other symptoms include constantly seeking attention and admiration, setting unrealistic goals, exaggerating talents, self-centeredness, arrogant behavior, and an inability to recognize others' feelings. Though there is no known treatment for NPD, psychotherapy may be of some help.
-
Alcoholism and Alcohol Abuse
Alcoholism is a disease that includes alcohol craving and continued drinking despite repeated alcohol-related problems, such as losing a job or getting into trouble with the law. It can cause myriad health problems, including cirrhosis of the liver, birth defects, heart disease, stroke, psychological problems, and dementia. Counseling and a few medications can be effective for alcoholism treatment.
-
Bipolar Disorder in Children, Teens, and Adults
Bipolar disorder (or manic depression) is a mental illness characterized by depression, mania, and severe mood swings. Treatment may incorporate mood-stabilizer medications, antidepressants, and psychotherapy.
-
Schizophrenia
Schizophrenia is a disabling brain disorder that may cause hallucinations and delusions and affect a person's ability to communicate and pay attention. Symptoms of psychosis appear in men in their late teens and early 20s and in women in their mid-20s to early 30s. With treatment involving the use of antipsychotic medications and psychosocial treatment, schizophrenia patients can lead rewarding and meaningful lives.
-
Antisocial Personality Disorder
Antisocial personality disorder (ASPD) has many symptoms, signs, and causes. Therapy is one treatment option for antisocial personality disorder. It is closely related to other personality disorders (PD), such as borderline personality disorder and narcissistic personality disorder.
-
Dissociative Identity Disorder
Dissociative identity disorder (formerly known as multiple personality disorder or split personality disorder) is a mental illness in which a person has at least two distinct personalities. Symptoms and signs include lapses in memory, feeling unreal, blackouts in time, hearing voices in their head that are not their own, not recognizing themselves in the mirror, and finding items in one's possession but not recalling how they were acquired. Treatment usually involves psychotherapy, medications, and sometimes hypnosis.
-
What Is ADHD in Children?
Attention deficit hyperactivity disorder (ADHD) causes the following symptoms in children: excessive activity, problems concentrating, and difficulty controlling impulses. Stimulant medications are the most common medication used to treat ADHD.
-
Is There Such a Thing as Battered Husband Syndrome?
Battered husband syndrome a type of post-traumatic stress disorder that happens when a man has been emotionally, physically, or sexually abused.
-
Borderline Personality Disorder (BPD)
Borderline personality disorder is a serious mental illness characterized by pervasive instability in moods, interpersonal relationships, self-image, and behavior. This instability often disrupts family and work life, long-term planning, and the individual's sense of self-identity. Originally thought to be at the "borderline" of psychosis, people with borderline personality disorder (BPD) suffer from a disorder of emotion regulation.
-
Duck Syndrome
Duck syndrome is a situation initially coined at Stanford University whereby a college student may seem to be calm on the surface when actually he or she is frantically struggling to stay above water to meet the demands of student life.
-
Mental Health
Mental health is an optimal way of thinking, relating to others, and feeling. All of the diagnosable mental disorders fall under the umbrella of mental illness. Depression, anxiety, and substance-abuse disorders are common types of mental illness. Symptoms and signs of mental illness include irritability, moodiness, insomnia, headaches, and sadness. Treatment may involve psychotherapy and medication.
-
Teen Depression
Depression in teenagers may be caused by many factors. Symptoms of teen depression include apathy, irresponsible behavior, sadness, sudden drop in grades, withdrawal from friends, and alcohol and drug use. Treatment of depression in adolescents may involve psychotherapy and medications.
-
Obsessive Compulsive Disorder (OCD)
Obsessive-compulsive disorder (OCD) is an anxiety disorder that causes a person to suffer repeated obsessions and compulsions. Symptoms include irresistible impulses despite a person's realization that the thoughts are irrational, excessive hand washing, skin picking, lock checking, or repeatedly rearranging items. People with OCD are more likely to develop trichotillomania, muscle or vocal tics, or an eating disorder. Treatment for OCD includes psychotherapy, behavioral therapy, and medication.
-
Anorexia
Anorexia is an eating disorder characterized by markedly reduced appetite or total aversion to food. Anorexia is a serious psychological disorder and is a condition that goes well beyond out-of-control dieting. With anorexia, the drive to become thinner is actually secondary to concerns about control and/or fears relating to one's body. There are psychological and behavioral symptoms as well as physical symptoms of anorexia including: depression, social withdrawal, fatigue, food obsession, heart and gastrointestinal complications, kidney function, flaky skin, brittle nails, and tooth loss (this list is not exhaustive).
-
Suicide
Suicide is the process of intentionally ending one's own life. Approximately 1 million people worldwide commit suicide each year, and 10 million to 20 million attempt suicide annually.
-
Bulimia
People with bulimia nervosa, an eating disorder that involves episodes of bingeing and purging, experience symptoms and signs such as deteriorating teeth, sore throat, constipation, thinning hair, and dehydration. Treatment of bulimia may involve cognitive behavior therapy, family therapy, nutritional counseling, and medication.
-
Munchausen Syndrome
Munchausen syndrome is a factitious disorder and attention-seeking syndrome in which an individual pretends to have physical or psychological symptoms in order to gain attention. Symptoms and signs vary from heart symptoms, chest pain, and fainting to ear problems and hallucinations. Sufferers tend to seek help from multiple care providers, seem overly pleased at being subjected to tests and procedures, and have vague symptoms that are inconsistent with test results. There is no particular treatment approach that is consistently effective in treating Munchausen syndrome.
-
Schizoaffective Disorder
Schizoaffective disorder is a mental illness that features schizophrenia and a mood disorder, either major depression or bipolar disorder. Symptoms include agitation, suicidal thoughts, little need for sleep, delusions, hallucinations, and poor motivation. Treatment may involve psychotherapy, medication, skills training, or hospitalization.
-
Depression in Children
Childhood depression can interfere with social activities, interests, schoolwork and family life. Symptoms and signs include anger, social withdrawal, vocal outbursts, fatigue, physical complaints, and thoughts of suicide. Treatment may involve psychotherapy and medication.
-
What Are the Best Treatments for Schizophrenia? Can It Be Treated Naturally?
Learn what medical treatments and natural treatments can ease your schizophrenia symptoms and help you manage this mental health condition.
-
Gambling Addiction
Compulsive gambling is a disorder that affects millions in the U.S. Symptoms and signs include a preoccupation with gambling, lying to family or loved ones to hide gambling, committing crimes to finance gambling, and risking importance relationships and employment due to gambling. Treatment may incorporate participation in Gamblers' Anonymous, psychotherapy, and medications like carbamazepine, topiramate, lithium, naltrexone, antidepressants, clomipramine, and fluvoxamine.
-
What Is Schizotypal Personality Disorder?
Schizotypal personality disorder is characterized by odd behaviors, feelings, perceptions, and ways of relating to others that interfere with one's ability to function. Medication and psychotherapy can help the sufferer to manage their symptoms.
-
Is Bipolar 1 or 2 Worse?
What is the difference between bipolar 1 and 2? Which is worse? What are the different symptoms?
-
What Are the 5 Types of Schizophrenia?
Schizophrenia is a form of psychosis that can cause delusions and other behaviors that adversely affect your life. Learn more about schizophrenia and its symptoms.
-
Factitious Disorders by Proxy (Munchausen Syndrome)
Factitious disorders are a mental illness (Munchausen syndrome) in which a caregiver secretly abuses a child by faking symptoms in the child. Symptoms of factitious disorders in victims include chest pain, fainting, and hallucinations. They don’t know what causes factitious disorders; however, it is thought to be a combination of biological variables. Treatment for factitious disorders include a healthcare team.
-
Dysthymia
Dysthymia is a less severe form of chronic depression. Symptoms and signs include insomnia, suicidal thoughts, guilt, empty feeling, loss of energy, helplessness, sluggishness, and persistent aches and pains. Treatment may involve psychotherapy, electroconvulsive therapy, and antidepressants.
-
Can You Be Schizophrenic and Bipolar?
Doctors have a hard time diagnosing bipolar disorder or schizophrenia because some of their symptoms may be similar. Some people can have symptoms of both disorders. They have a condition called schizoaffective disorder.
-
Depression in the Elderly
Depression in the elderly is very common. That doesn't mean, though, it's normal. Treatment may involve antidepressants, psychotherapy, or electroconvulsive therapy.
-
Factitious Disorders
Factitious disorders are conditions in which people pretend to have physical or mental illnesses when they aren't sick. These people may lie about or fake symptoms to obtain the sympathy and attention given to people who are genuinely ill. Symptoms of factitious disorders include dramatic, inconsistent medical history, the presence of many surgical scars, and a history of seeking treatment at many different hospitals.
-
When Should You Tell Someone You Have a Mental Illness?
When you decide to discuss mental illness with anyone in your life, make a plan for what you want to say.
Treatment & Diagnosis
Medications & Supplements
- Benzodiazepines
- Anxiolytics (for Anxiety) Drug Class Side Effects
- aripiprazole (Abilify)
- haloperidol
- Medicines that Cause Depression
- clozapine (Clozaril, Fazacio ODT, Versacloz)
- Vayarin (phosphatidylserine-omega-3, Liprinen)
- paliperidone palmitate (Invega Sustenna)
- fluphenazine (Permitil, Prolixin)
- brexpiprazole (Rexulti)
- Side Effects of Prolixin (fluphenazine)
- Side Effects of Mellaril (thioridazine)
- iloperidone (Fanapt)
Prevention & Wellness
- Long Stays Common for Kids Who Visit ERs in Mental Health Crisis
- America's 988 Suicide and Crisis Lifeline Launches Saturday
- Various Mental Illnesses Share Same Genes
- Odds for Mental Illness Rise in Kids After Concussion
- When Psychiatric Care Is Far Away, Telehealth Fills the Gap
- Pet Dogs May Reduce Kids' Schizophrenia Risk
- Depression: The Link Between Depression and Other Mental Illnesses
- Depression: Major Depression
- Psychotic Depression
- Exercise and Depression
- Diagnosing Depression
- Depression: Alternative Therapies for Depression
- Bipolar Disorder
- Schizophrenia Gene Variant Linked to Risk Traits
- Sleep and Psychiatric Disorders
- Sleep and Depression
From 
Mental Health Resources
Featured Centers
Health Solutions From Our Sponsors
Subscribe to MedicineNet's Depression Newsletter
By clicking "Submit," I agree to the MedicineNet Terms and Conditions and Privacy Policy. I also agree to receive emails from MedicineNet and I understand that I may opt out of MedicineNet subscriptions at any time.