It is very painful disease.

It is more commonly in young women and children, the patient starts getting nausea before the pain starts. Evreything looks foogy it seems that sparks appear to be dancing in front of eyes and then pain starts in half side of head.
This disease uaually occurs as a family disease and often due to allergies.

Treatment

Take a rest in dark room the atmosphere should be absolutely calm and quiet, take 2 aspirin and also take a cup of tea or cofee, it can usually be saved from pain.
Stematil or Sonalgin is useful in pain and they guarantee protection against this pain in future.
Good luck!