Cabin Fever as defined in Wikipedia - Cabin fever is an idiomatic term for a claustrophobic reaction that takes place when a person or group is isolated and/or shut in, in a small space, with nothing to do, for an extended period (as in a simple country vacation cottage during a long rain or snow). Symptoms include restlessness, irritability, forgetfulness, laughter, and excessive sleeping, distrust of anyone they are with, and an urge to go outside even in the (less miserable) rain, snow or dark.
I especially like the last line about an urge to go outside. If I use only this part of the definition, then I have cabin fever most all the time of my life. But to be fair to cabins everywhere, I live in the Ozarks. The Ozarks just really make people want to be outside and doing things.
I can say that I have been on water skis in Norfork Lake in almost every month - including January. I have been on the Buffalo River during every calendar month. I have hiked in snow, hiked in poisen ivy. Fishing for White River trout never gets slow because of cold weather. They love it.
Just a few days ago, here in mid February, my buddy and I were making our way around the Bull Shoals State Park mountain bike trail in the snow. Our feet were caked with so much snow and ice that they were frozen.
Really, the Ozark Mountain outdoors is a great place to be even when the weather has been miserably cold this year - and when you are frozen and tired, that great little secluded rental cabin will feel GREAT.