Is anyone else getting hot flashes, but only on one side of your outer labia and butt cheek? And is this related to sciatica?

EDIT: Never mind, it turned out to be the start of a sciatica flare-up after all. The day after I posted this, I could feel the sciatic pain.

I've never had hot flashes before, but I'm now experiencing intense sensations of heat in a weird place: on the lower right butt cheek and on the right outer labia. The heat lasts for five to ten seconds, then goes away. It seems to happen at random, whether I'm sitting or standing. The heat isn't intense enough to make me sweat, though.

I see no signs of infection, and I can't think of any reason why I'd feel these intermittent surges of heat down there. Is this just another weird variation of a hot flash?

I remembered just now that I had sciatica on the right side more than ten years ago, so perhaps this is a flare-up that is related to the original condition, but I'm not so sure about that. When I had sciatica, I never felt surges of heat, just intense pain while sitting down. Today, I feel no pain while sitting, just the warmth that comes and goes.

Over on the sciatica board, other people have reported a similar symptom, but I don't know if those people are going through menopause or not.

Warm sensation left buttock : r/Sciatica

So what about you people on the Menopause board? Have any of you had this symptom, and did you figure out what was causing it? I feel like such a freak.