Over the past 4 months, I've had 3 occurrences of very small, blister type reactions form on the center of my upper lip
. At first it just starts out as dry, itchy
skin, but over a day or so, it becomes more painful. The first occurrence I had was a lot more painful and lasted longer. I had extremely dry, cracked skin on the corners of my mouth which caused me to not be able to open it very far, as well as the small painful blisters on the top of my mouth.