What is the class of disorders in which the physical symptoms present are psychological rather than physical in origin?

Question

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Somatoform disorders are characterized by physical symptoms that are either largely influenced by psychological factors or have no apparent medical explanation. Examples include conversion disorder, in which a person may experience blindness, paralysis, or other neurological symptoms with no detectable physiological cause, and hypochondriasis, in which a person has persistent fears of having a serious medical condition despite reassurances from medical professionals. Mood disorders (A) relate to disturbances in emotional state, affective disorders (C) is not a recognized diagnostic term, and dissociative disorders (D) include disruptions in memory, identity, or consciousness.

What Is the Class of Disorders in Which the Physical