I, psychological misorientation functions as a diagnostic criteria for every disorder in the Nosology. French and German psychiatric nosology was in the ascendency. He developed a strong interest in nosology of psychiatric illnesses. With Kleist, he created a complex classification of psychotic illnesses called Nosology. The classification of mental disorders is also known as psychiatric nosology or psychiatric taxonomy. The main concept in nosology is the disease entity. The term neurocognitive is a recent addition to the nosology of clinical Psychiatry and Psychology. In addition, significant changes have been made in the nosology of insomnia, narcolepsy and parasomnia. The nosology of the various stages of a manic episode has changed over the decades. Despite the significant clinical relevance, this diagnosis is neglected both in literature and in nosology. Like the DSM, the Azibo Nosology is an organized system for diagnosing disorders and pathologies. Nosology () is the branch of medical science that deals with the classification of diseases.