Definition Of


Unlike hypochondriasis, in which there is no physical problem, conversion disorders involve an actual physical disturbance, such as the inability to see or hear or to move an arm or leg. The cause of such a physical disturbance is purely psychological; there is no biological reason for the problem. Some of Freud’s classic cases involved conversion disorders. For instance, one of Freud’s patients suddenly became unable to use her arm, without any apparent physiological cause. Later, just as abruptly, the problem disappeared.

Share it:

More from this Section

  • Optic nerve
    The ganglion cells collect and summarize visual information, which is then moved out the book of the eyeball and seen to the brain through a bundle of ganglion axons called the optic nerve.
  • Syntax
    Syntax refers to the rules that indicate how words and phrases can be combined to form sentences. Every language has intricate rules that
  • Sequential research
    A research method that combines cross-sectional and longitudinal research by considering a number of different age groups and examining
  • Basilar membrane
    Basilar membrane is a vibrating structure that runs through the center of the cochlea, dividing it into an upper chamber and a lower chamber and
  • Diagnostic and Statistical Manual of Mental Disorders
    Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR) is a system, American Psychiatric Association,
  • Internet
    The global collection of networked computers that began with technology and equipment funded by the U.S. Department of Defense in the 1970s.
  • Convergent thinking
    Convergent thinking, which produces responses that are based primarily on knowledge and logic. For instance, someone relying on