#syphilis__syph__pox  a common venereal disease caused by the Treponema pallidum spirochete; symptoms change through progressive stages; can be congenital (transmitted through the placenta)
  supertype:  #venereal_disease__VD__social_disease__Cupid's_itch__Cupid's_disease__Venus's_curse__sexually_transmitted_disease  a communicable disease transmitted by sexual intercourse or genital contact
  part:  #chancre
  subtype:  #primary_syphilis  the first stage; characterized by a chancre at the site of infection
  subtype:  #secondary_syphilis  the second stage; characterized by eruptions of the skin and mucous membrane
  subtype:  #tertiary_syphilis  the third stage; characterized by involvement of internal organs especially the brain and spinal cord as well as the heart and liver
  subtype:  #neurosyphilis__neurosyphili  syphilis of the central nervous system
     subtype:  #tabes_dorsalis__locomotor_ataxia__locomotorataxia  syphilis of the spinal cord characterized by degeneration of sensory neurons and stabbing pains in the trunk and legs and unsteady gait and incontinence and impotence

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