It started randomly just a few days ago.
I woke up with an incredibly annoying itch on my legs. I scratched 'em, then large welts appeared. Like multiple misquito bites!

I first assumed it was some rabbid fleas brought in by my dogs, so I washed my bedding and made the dogs their own bed.

Three days later, and i'm still waking up with that itch!

It's only on my legs. No where else. And the welts are in different places every day.

Any ideas?