Cluster headache in identical twins.

  title={Cluster headache in identical twins.},
  author={Ottar Sjaastad and Jean M Shen and Lars Stovner and Tor B Els{\aa}s},
  volume={33 4},
Twin brothers with cluster headache are described. Monozygosity was demonstrated by conventional genetic markers and DNA-typing. Both had "mini-bouts" in the early stages. In the one, attacks were always excruciatingly severe; in the other, they started out as "mild", eventually becoming more severe. Both brothers also suffered from paroxysmal tachycardia. The connection between attacks of tachycardia and cluster headache remains enigmatic. The observation of cluster headache in monozygotic… CONTINUE READING