According to 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. 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’ve been off the uni for close to three weeks – my lower leg/ankle/foot is healing but ever so slowly. I really miss my daily fix of the outdoors and being physically active, but as much as I’d like to ride I don’t want to make things worse or prolong the healing process.