avoid direct sunlight (and often, even just heat sets mine off)
To Mduck--so sorry to have to welcome you to this forum. It seems all of us
have been through going to all kinds of
doctors, dermatologists, AND neurologists and spent hundreds of dollars on all kinds of steroid creams, and still no "cure", just maybe some ideas for temporary relief. This is why I am wide awake and typing at 4:39 AM! :( It's truly miserable. Hang in there, and keep communicating...