ICD-10-CM Code F48.1
Depersonalization-derealization syndrome

Depersonalization disorder (DPD), also known as depersonalization-derealization syndrome, is a mental disorder in which the people have persistent or recurrent feelings of depersonalization and/or derealization. Symptoms can be classified as either depersonalization or derealization. Depersonalization is described as feeling disconnected or estranged from one's body, thoughts, or emotions. Individuals experiencing depersonalization may report feeling as if they are in a dream or are watching themselves in a movie. They may feel like an outside observer of their own thoughts or body, and often report feeling a loss of control over their thoughts or actions. In some cases, individuals may be unable to accept their reflection as their own, or they may have out-of-body experiences. While depersonalization is a sense of detachment from one's self, derealization is described as detachment from one's surroundings. Individuals experiencing derealization may report perceiving the world around them as foggy, dreamlike/surreal, or visually distorted. In addition to these depersonalization-derealization disorder symptoms, the inner turmoil created by the disorder can result in depression, self-harm, low self-esteem, anxiety attacks, panic attacks, phobias, etc. It can also cause a variety of physical symptoms, including chest pain, blurry vision, nausea, and the sensation of pins and needles in one's arms or legs.