Fairfax County residents are itching to understand the culprit behind weird skin reactions, possibly linked to bug bites, that have been reported throughout the D.C. region this summer.

As first reported by Tysons Reporter’s sister site ARLnow, people in Northern Virginia and beyond are finding itchy red marks on their skin that are not quite mosquito bites and may be linked to oak leaf itch mites, an arachnid that’s nearly invisible to the naked eye.

Click here to read the full story in Tysons Reporter.