9 Answers

You might find info here...... http://www.mayoclinic.com/health/skin-rash/SN00016

maybe something toxic, poison ivy or another contact poison?  Or did you recently change laundry products?  Eaten anything different lately, gone swimming in fresh water pond?  New pet?  Look for clues, and you may end mystery spots!

I would get it checked out with your Doctor it may be something or nothing good luck

Flea bites or chiggers WBMG...........

Ducky

WBHG, IMO, LOL

Get some "over the counter" anti- histamine tablets.You only take 1 a day & it will relieve the itching.

I'm going to agree with the flea bite theory.  Possibly a rash to weeds, brush, or grass. Maybe mosquitoes? 

sounds like bed bugs, or mites, or scabies, or shingles, flea bites ( cats or dogs ) . Could be from what we call in Michigan, " no see-ums "   It's a very small chigger like bug that you can't see that may be biting you . Could be poison ivy. Could be a allergic reaction to something. Go to your Dr. or go to a dermatologist. But, all they're gonna do is say it's insect bites, and give you Benedryl capsules and hydrocortizone cream

Have you been doing something unusually like wearing different cloathes or change your diet Do you use your own lawndry machine or it could be something simple that you forgot about the water you went swimming had some blew agie ,Your best bet get check out !

may be its the dreaded bed bugs.