My Dermatologist Could Not Identify The Rash/bites I Had On

My dermatologist could not identify the rash/bites I had on my breasts. She and a colleague thought it "might" be shingles. I had no pain but I did have terrible itching for 2 days. My apartment was being plagued by ants and by checking the internet I saw ant bites on others that looked like mine. I took Valacyclovir for 8 days. Can you comment?