I have a problem of when it get really cold out and my neck is exposed my muscles tense up and my tounge will swell and turn blue. I have had a few CT's to look into the problem and they find nothing. I just had my 5 year checkup with a clean bill of health from squamous cell carcinoma. Radiation 46 treatments and 3 rounds of cisplantin. I do have some fibrosis of the neck muscles. My dr kids that he could write that I am allergic to the cold. To help I have to stop and get something warm to drink and hold it in my mouth. My problem is I still love to hunt and do out door activities plus I do have to walk sometimes to get to my vehicle at work. Does anyone else have this problem? What helps? Thanks and good luck to everyone here.