To friend, family, or stranger:

It's a debilitating neurological disorder causing excruciating head and eye pain. It is not migraines or typical headaches. It can occur at any time of day for several hours at a time, seasonally for 2 to 3 months of the year. During this time I may be incapacitated, unreliable, ignore you, or disappear at any time. I do not need medical attention but please leave me alone and do not talk to me if I'm having an attack. Thank you.