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Keywords:

  • hemicrania continua;
  • Raeder syndrome;
  • facial hypohydrosis

Benign Raeder syndrome is characterized by a self-limiting unilateral continuous headache associated with ipsilateral ptosis, miosis, and frequently, facial hypohydrosis. Hemicrania continua is a chronic, strictly unilateral continuous headache associated with ipsilateral cranial autonomic symptoms. We report a 50-year-old man who presented with benign Raeder syndrome, which evolved into an indomethacin-responsive hemicranial headache that resembled hemicrania continua.