Well I’ve had Intermittent tingling for the last twenty five years. It is residual. Not a flare up. Things will aggravate it such as heat. It’s something I’ve always had.

Ir was with me early on. If all tingling ceases then new tingling begins, it's a relapse. If it's just tingling in a new area (you have tingles in other areas), then your relapse is spreading. That's how I understand it.

If it lasts over 24 hrs

All my tingling was on Left side. Now right hand started plus hand gets cold as ice and hurts with use! Plus I am Right Handed!

I dont know why the docs arent being clear as to inform ms patients what is considered an exerbation or relaspse. If its not intense, and you need hospitalization, its not a relaspse, just ms being ugly. Thete are so so many querky things, i cant even begin to name them all, because it can be something very minimal, to something hugh and painful and it wont be a relaspe.