​Psychotic disorders cause detachment from reality — such as delusions, hallucinations, and disorganized thinking and speech. The most notable example is schizophrenia, although other classes of disorders can be associated with detachment from reality at times.

​Anxiety is an emotion characterized by the anticipation of future danger or misfortune, along with excessive worrying. It can include behavior aimed at avoiding situations that cause anxiety. This class includes generalized anxiety disorder, panic disorder and phobias.

This class includes disorders with alternating episodes of mania — periods of excessive activity, energy and excitement — and depression.

These disorders involve preoccupations or obsessions and repetitive thoughts and actions. Examples include obsessive-compulsive disorder, hoarding disorder and hair-pulling disorder (trichotillomania).

These include disorders that affect how you feel emotionally, such as the level of sadness and happiness, and they can disrupt your ability to function. Examples include major depressive disorder and premenstrual dysphoric disorder.

These are adjustment disorders in which a person has trouble coping during or after a stressful life event. Examples include post-traumatic stress disorder (PTSD) and acute stress disorder.