Is this a thing? I wouldn't have thought I was, in my case anyway, since I've always drank tap water and I have always lived in the same house since I was born. The only two things I drink are water (tap water) and Coca Cola, and sometimes milk. So it's quite odd..

Anyway, recently (for the past 2 or 3 weeks) my throat has been getting very scratchy/sore and it's painful to swallow, my mouth is also very dry almost all the time.

Everything in my life and environment is a constant, not changed for a long while. The only thing that is different is sleep and stress levels, however, if it was stress, why does the sore throat stop when I don't drink water. I've tried only drinking coca cola for a few days and I had no pain, but then as soon as I took a sip of water, my throat felt sore again.

It's not a painful pain.. More of an irritating and uncomfortable pain. Any ideas?