I'm getting really irritated by something and I don't know the cause so I'm not sure how to cure it.

Every so often in the day (and night) the inside my my throat starts to itch. It's usually on one side - but he side that itches varies.

Then I start coughing as if to clear my throat. Not nice :(

And finally I sneeze one huge, violent thunderstorm of aitchoo.

And it's over for a few hours.

And it's beginning to annoy me :>