Cabin Fever

From 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, for an extended period. Symptoms include restlessness, irritability, forgetfulness, laughter, and excessive sleeping.[1] The word is also used humorously to indicate simple boredom from being home alone.[2] The term was first recorded in 1918.

From my journal:
It’s about this time that Minnesotans get taken over by a plague known as “Cabin Fever.” We can hardly get out of the house because it’s so co-o-o-o-old. We’re sick to the death of each other,. We’ve been holed up with each other for days. Dad has been planting farts in easy chair and watching TV. Mom is chirping about taking down the Christmas tree ornaments and shoveling the walk. Your brain is pounding with every step walking on the floor above you. Every time someone opens a cupboard and it creaks, you shudder.

You head for the coffee shop with your computer.