unusually prolonged flare up

so i have primary erythromelalgia and yesterday at around 2:30 pm i started to notice that my hand was starting to have a flare up (they last 15 minutes on average) but when i got home from school and the lidocaine that i had applied wore off i noticed that it was still hot and hurting, since then its been mostly non stop for over 24 hours at this point and i need advice, i was only diagnosed two months ago (id been dealing with it for a year up to that point) and i feel like out of nowhere its suddenly gotten more frequent but this duration is something new entirely.

(the first picture is last night at around 11 pm, the second is from probably 15 minutes ago, and the last is my other (non affected) hand, taken at the same time as the second)

if anybody has any suggestions of longer lasting methods of reduced pain (i already took an advil probably 30 minutes ago for context) or suggestions on what to do about it i’d really appreciate that.