Itchy, red indentations

For about a year now, I've been getting 1 to 5 red spots on my arms- usually on my forearms or around my elbows. They seem a little like poison ivy: very itchy, concave, and don't scab over. They last a one to three weeks, heal up, and then another 1 to 5 will pop up in another place, but only on my arms.

I have only one right now, has been around for about a week.

What the heck could this be?

No topical application (witch hazel, calamine lotion, neosporin, hydrogen peroxide) seems to help.

any help appreciated!

[Bhupinder Kaur, MD]

Hello,
From the symptoms many possibilities are possible. it can  be due to lichen myxedamatous, dermatitis herpetifromis , scabies etc. I suggest you to consult a dermatologist and get a biopsy skin done to get the diagnosis confirmed.
I hope it helps. Take care and regards.