3.3.2.1 Episodic SUNA

A 38-year-old electrician describes a headache pattern that has now returned for a sixth spell, running for about a week. Each attack stays fixed above one eye on the same side and never crosses to the other, with the pain reaching a severe pitch every time. Instead of building smoothly, it rises and falls in an uneven, jagged wave before finally releasing him. A single attack lasts roughly six and a half minutes, and at present he is getting five of them a day. Over the years he estimates he has been through around forty such attacks in total, though he admits he has stopped counting exactly. The eyelid above the affected eye swells and puffs visibly while an attack is happening, yet the eye itself remains dry and clear, without any redness or tearing.