#cyanosis  a bluish discoloration of the skin and mucous membranes; a sign that oxygen in the blood is dangerously diminished (as in carbon monoxide poisoning)
  supertype:  #symptom  (medical) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease
  part of:  #carbon_monoxide_poisoning
  subtype:  #acrocyanosis__Raynaud's_sign  cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotion

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