Source: The Centers for Disease Control

Mental health includes our emotional, psychological, and social well-being. It affects how we think, feel, and act. It also helps determine how we handle stress, relate to others, and make healthy choices.1 Mental health is important at every stage of life, from childhood and adolescence through adulthood.

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 types of mental illness. Some of the main types of mental illness and disorders are listed here.