#erythema_nodosum  skin condition characterized by tender red nodules on the shins and legs
  supertype:  #erythema  abnormal redness of the skin resulting from dilation of blood vessels (as in sunburn or inflammation)
  subtype:  #erythema_nodosum_leprosum__ENL  an inflammatory complication of leprosy that results in painful skin lesions on the arms and legs and face

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