#head_ache__headache__cephalalgia  pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs
  supertype:  #ache__aching  a dull persistent (usually moderately intense) pain
  subtype:  #histamine_headache__histamineheadache__cluster_headache__clusterheadache  a headache associated with the release of histamine from cells
  subtype:  #migraine__megrim__sick_headache__hemicrania  a severe recurring vascular headache; occur more frequently in women than men
  subtype:  #sick_headache  a headache accompanied by nausea
  subtype:  #sinus_headache__sinusheadache  a headache resulting from congestion or infection in the paranasal sinuses
  subtype:  #tension_headache__tensionheadache  a headache located at the back of the head; usually caused by body tension resulting from overwork or psychological stress

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