Around it, there is a slightly less dark, but still dark red rash
about 1cm x 2cm. Around *that*, there's a lighter red rash
of about 8cm by 5cm. From this later rash, there is a long thin rash of the same color that is about 1-2cm wide and maybe 25cm long, reaching almost to my armpit. This long rash has grown from nothing to its current length in about 12 hours.
It's quite painful and itchy. Putting ice on it makes it better, but not much, and hydrocortisone doesn't help. I have an appt.