#urethritis  inflammation of the urethra; results in painful urination
  supertype:  urinary_tract_infection__urinarytractinfection  any infection of any of the organs of the urinary tract
  subtype:  nongonococcal_urethritis__NGU  sexually transmitted urethritis (usually caused by chlamydia)
  subtype:  nonspecific_urethritis__NSU  inflammation of the urethra of unknown cause

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