Examorexia

An exam related mental illness that involves the subject revising between 6-12 hours a day under the impression that they aren’t revising enough. This belief forces them to revise more and more but enforces said belief.

This illness is usually seen in Teenagers sitting/about to sit exams.
symptoms can include;

Lack of social life.
Fustration.
Unquenchable need to constantly revise.
Despair.

Not only is this a time when the only emotion is desire to revise, but also during this period there is a constant need for tea. Even if you have just finished drinking a mug.. you're brain (due to suffering from examorexia) tricks itself into believing that you need more to keep up the pace of mass revision.

A typical sufferer will consume 30 mugs of tea a day on average.