I've been experiencing this intermittently since the summer. I already had very bad tinnitus. It started as a cold sensation in both ears, similar to menthol, and that went away after about 1 week. After that, it began flaring up in my right ear and face during moderately loud events, even something as simple as passing a semi on the highway while wearing earplugs.
My ear starts to feel cold, then the sensation spreads to my entire outer ear and into my cheekbone. From there, it moves up to my eyebrow and down to my chin. It's usually accompanied by facial tingling. These episodes would last 1 to 2 hours before going away, but each flare-up began lasting longer than the last. I'm now on day 3 of a continuous episode.
It's an awful sensation. I feel as if I'm standing in Arctic conditions, with my face and ear feeling frostbitten. It's cold and painful, yet when I touch my face, it doesn't actually feel cold at all. I think earplugs, or anything touching my face, make it worse, but I still have to wear earplugs at times to protect my tinnitus from worsening.