Two nights ago I noticed a little bump on the back of my 15 month olds calf. It looked & felt like a pimple to me. She does get a little bit of baby acne on her face especially with how humid it's been the past few weeks so I wasn't too concerned. The tip of the bump felt hard similar to a pimple that needed popped. Yesterday it had the same appearance however today when I got LO up it had a large red ring around the site! My MIL thinks it's a boil. She has a doctors appointment on Monday so I hate to take her to the ER unnecessarily if it is just a boil. We do live out in the country a bit in PA & my husband & FIL have both had Lyme Disease from tick bites so I'm just concerned- it doesn't seem to be a bulls eye though. She has no other spots on her body.