Mental illness is any disease or condition affecting the brain that
influences the way a person thinks, feels, behaves and/or relates to others and
to his or her surroundings. Although the symptoms of mental illness can
range from mild to severe and are different depending on the type of
mental illness, a person with an untreated mental illness often is unable to
cope with life's daily routines and demands.
What Causes Mental Illness?
Although the exact cause of most mental illnesses is not known, it is
becoming clear through research that many of these conditions are caused by a
combination of genetic, biological, psychological and environmental factors.
One thing is for sure—mental illness is not the result of personal
weakness or a character defect, and recovery from a mental illness is not
simply a matter of will and self-discipline.
Heredity (genetics): Many mental illnesses run in
families, suggesting that the illnesses may be passed on from parents to
children through genes. Genes contain instructions for the function of each
cell in the body and are responsible for how we look, act, think, etc. But,
just because your mother or father may have a mental illness doesn't mean you
will have one. Hereditary just means that you are more likely to get the
condition than if you didn't have an affected family member. Experts believe
that many mental conditions are linked to problems in multiple genes—not
just one, as with many diseases—which is why a person inherits a
susceptibility to a mental disorder, but doesn't always develop the condition.
The disorder itself occurs from the interaction of these genes and other
factors—such as psychological trauma and environmental stressors—which
can influence, or trigger, the illness in a person who has inherited a
susceptibility to it.
Biology: Some mental illnesses have been linked to an
abnormal balance of special chemicals in the brain called neurotransmitters.
Neurotransmitters help nerve cells in the brain communicate with each other. If
these chemicals are out of balance or are not working properly, messages may
not make it through the brain correctly, leading to symptoms
of mental illness. In addition, defects in or injury to certain areas of the
brain also have been linked to some mental conditions.
Psychological trauma: Some mental illnesses may be
triggered by psychological trauma suffered as a child, such as severe
emotional, physical or sexual abuse; a significant early loss, such as the loss
of a parent; and neglect.
Environmental stressors: Certain stressors—such as a
death or divorce, a dysfunctional family
life, changing jobs or schools and substance abuse—can trigger a disorder in
a person who may be at risk for developing a mental illness.
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).
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).
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.
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.
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.
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.
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.
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.
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.
Attention deficit hyperactivity disorder (ADHD) is a behavioral disorder characterized by the symptoms hyperactivity, impulsivity, and inattention. Treatment for ADHD may involve behavioral therapy and psychostimulant or antidepressant medication.
Bulimia is an eating disorder characterized by episodes of secretive excessive eating (bingeing) followed by inappropriate methods of weight control, such as self-induced vomiting (purging), abuse of laxatives and diuretics, or excessive exercise. Purging and nonpurging are the two types of bulimia. There are five basic criteria in the diagnosis of bulimia.
Fragile X syndrome is the most common inherited form of mental retardation. It's caused by a mutation on the X chromosome. People with Fragile X syndrome suffer from physical, social, emotional, speech, language, sensory, intelligence, and learning impairments. There is no definitive treatment for Fragile X, though there are ways to minimize the symptoms.
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.
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.
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.
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.
Body dysmorphic disorder (BDD) is an illness where a person is overly preoccupied with some minor or imaginary flaw. People with BDD tend to have cosmetic surgery. BDD can be treated with SSRIs and cognitive behavioral therapy.
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.
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.
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.
Depression in the elderly is very common. That doesn't mean, though, it's normal. Treatment may involve antidepressants, psychotherapy, or electroconvulsive therapy.
Munchausen syndrome by proxy (MSBP) is a mental illness (factitious disorder) in which a caregiver secretly abuses a child by faking symptoms in the child. Symptoms present in the child include suffocation, bleeding, poisoning, and induced seizures. Treatment involves maintaining the safety of the child and typically incorporates psychotherapy and psychiatric medications for both the perpetrator and victim.
Experts are not sure what causes dysthymia. This form of chronic depression
is thought to be related to brain changes that involve serotonin, a chemical or
neurotransmitter that aids your brain in coping with emotions. Major life
stressors, chronic illness, medications, and relationship or work problems may
also increase the chances of dysthymia.
What Are the Signs and Symptoms of Dysthymia?
The symptoms of dysthymia are the same as those of major depression but not
as intense and include the following:
Persistent sad or empty feeling
Difficulty sleeping (sleeping too much or too little)
Insomnia (early morning awakening)
Feelings of helplessness, hopelessness, and worthlessness
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