I experienced shingles at 19! I had a very isolated headache, literally one tiny spot on my forehead. I woke up the next morning and my eye was swollen almost shut and I had a major rash where the headache had been, all the way up onto my scalp. My doctor was frazzled and even called in a colleague to see if they also thought it was shingles. Thankfully I was prescribed a cream and an oral medication, and it cleared up. I didn’t learn until years later that with it being so close to my eye, it could have blinded me. Thankful for a doctor that took action quickly.