Red Blisters on Dog Belly

Question

Raley Belly   Yesterday I noticed a round brown circle on my dogs belly (near her lady parts - pic attached), at first glance I thought it was ringworm (but odd that it was brown instead of red), around the brown circle was a lot of red broken out skin - it looked irritated. This morning the red irritated skin had turned into blisters that look like very large pimples. She also seems very itchy and keeps biting at her belly. She is on Iverhart Max and K9 Advantix (just received both 2 days ago). Could this be ringworm or some fungal infection or a skin allergy? Should I wait a few days and see how it changes, or go to the vet asap?

Thank you for your help!

Answer
Hard to say what this could be. Could be a reaction to the medications but I doubt it would show up under there.

Most commonly something like this is from a foxtail or foreign body getting into the skin.

They usually will swell, blister then look like this as the body tries to get rid of them.

I would take her to the vets because stickers and grass awns can creep up into their bodies into places you don't want!!

I'd take her into the vets if she were my dog.