People can experience different types of mental illnesses or disorders, and they can often occur at the same time. Mental illnesses can occur over a short period of time or be episodic. This means that the mental illness comes and goes with discrete beginnings and ends. Mental illness can also be ongoing or long-lasting.
There are more than 200 classified types of mental illness. Some of the main types of mental illness and disorders are listed below; however, this list is not exhaustive.
People with anxiety disorders respond to certain objects or situations with fear and dread or terror. Anxiety disorders include generalized anxiety disorder, social anxiety, panic disorders, and phobias.
Attention-deficit/hyperactivity disorder (ADHD) is one of the most common childhood mental disorders. It can continue through adolescence and adulthood. People diagnosed with ADHD may have trouble paying attention, controlling impulsive behaviors (may act without thinking about what the result will be), or be overly active.
Disruptive Behavioral Disorders
Behavioral disorders involve a pattern of disruptive behaviors in children that last for at least 6 months and cause problems in school, at home, and in social situations. Behavioral symptoms can also continue into adulthood.
Depression and Other Mood Disorders
While bad moods are common, and usually pass in a short period, people suffering from mood disorders live with more constant and severe symptoms. People living with this mental illness find that their mood impacts both mental and psychological well-being, nearly every day, and often for much of the day.
It is estimated that 1 in 10 adults suffer from some type of mood disorder, with the most common conditions being depression and bipolar disorder. With proper diagnosis and treatment, most of those living with mood disorders lead healthy, normal and productive lives. If left untreated, this illness can affect role functioning, quality of life and many long-lasting physical health problems such as diabetes and heart disease.
Eating disorders involve obsessive and sometimes distressing thoughts and behaviors, including
Reduction of food intake
Feelings of depression or distress
Concern about weight, body shape, poor self-image
Common types of eating disorders include anorexia, bulimia, and binge eating.
People with personality disorders have extreme and inflexible personality traits that cause problems in work, school, or social relationships. Personality disorders include antisocial personality disorder and borderline personality disorder.
Post-traumatic Stress Disorder (PTSD)
A person can get PTSD after living through or seeing a traumatic event, such as war, a hurricane, physical abuse, or a serious accident. PTSD can make someone feel stressed and afraid after the danger is over. People with PTSD may experience symptoms like reliving the event over and over, sleep problems, become very upset if something causes memories of the event, constantly looking for possible threats, and changes in emotions like irritability, outbursts, helplessness, or feelings of numbness.
Schizophrenia Spectrum and Other Psychotic Disorders
People with psychotic disorders hear, see, and believe things that aren’t real or true. They may also show signs of disorganized thinking, confused speech, and muddled or abnormal motor behavior. An example of a psychotic disorder is schizophrenia. People with schizophrenia may also have low motivation and blunted emotions.
Substance Use Disorders
Substance use disorders occur when frequent or repeated use of alcohol and/or drugs causes significant impairment, such as health problems, disability, and failure to meet major responsibilities at work, school, or home. Substance use problems can be fatal to the user or others. Examples include drunk driving fatalities and drug overdoses.
Mental illnesses and substance use disorders often occur together. Sometimes one disorder can be a contributing factor to or can make the other worse. Sometimes they simply occur at the same time.
Content source: Centers for Disease Control and Prevention