Outside of masks keeping me covid-free so far, this summer they played double duty.  In June, I was diagnosed with Perioral Dermatitis (PD) which is a stubborn rash around the nose, mouth, and eyes.  Dermatologists don’t understand the cause of PD but have theories and my doctor and I believe it was fluoridated toothpaste that started my rash.  The condition is basically a breakdown of the...