Cabin fever

https://medicalxpress.com/news/2020-04-cabin-fever.html

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"Chronic loneliness is on par with smoking a pack of cigarettes a day in terms of its health repercussions. Not just for your mental health, but also for your physical health," Wood said. "Just the subjective feeling of being lonely increases inflammation in the body, which is the body's sickness state. Your body will physically be treating itself as if it were sick, which, in the long term, is bad for it."

Wood suggested that if you're beginning to feel the effects of exhaustion or depression, there are things you can do, like spending time in the sunlight every day,
finding creative activities that keep you from becoming bored and
establishing a routine that can bring some predictability to your day.

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