Ah yes - calamine lotion.
And get yourself the jab. Shingles is very unpleasant. I had it in my late forties; it affected one side of my face, and because it can cause blindness in the eye, I was prescribed some very powerful (and expensive) medication which I had to take several times a day at regular intervals.
Fortunately it did the trick, but it was an unpleasant week I wouldn't wish on anyone.

