The term “psyche” refers to the totality of human feelings, thoughts, and experiences. It encompasses all of a person’s mental and emotional qualities and personality traits. If a person exhibits altered behavior, experiences, feelings, or thoughts that deviate from the norm, medical professionals refer to this as a mental disorder or behavioral disorder. In the World Health Organization’s (WHO) internationally recognized diagnostic classification system, the ICD-10, these mental and behavioral disorders are coded in Chapter V under codes F00 through F99. They include, among others, substance use disorders, affective disorders characterized by changes in mood, delusional disorders, anxiety disorders, and developmental disorders.
Specialists in mental and behavioral disorders have typically completed specialized training to become psychiatrists. Closely related to psychiatry is the medical field of psychosomatics, which deals with the connection between mental illnesses and physical ailments that cannot be attributed to organic causes. On the following pages, you can find detailed information about a wide variety of mental illnesses and locate selected, qualified specialists in psychiatry and psychosomatics.
Specialists in mental and behavioral disorders have typically completed specialized training to become psychiatrists. Closely related to psychiatry is the medical field of psychosomatics, which deals with the connection between mental illnesses and physical ailments that cannot be attributed to organic causes. On the following pages, you can find detailed information about a wide variety of mental illnesses and locate selected, qualified specialists in psychiatry and psychosomatics.

