Help me, doc

Excuse me, is there a doctor in here by any chance? Because I've got a question. The thing is, I think I might have developed some form of physical reaction to studying. Is that possible? Please don't say no, because I can clearly see it's happening. The symptoms are overwhelmingly obvious. As soon as I think about studying, I start to feel tired and sick and get the most excrutiating headaches. Sometimes I even get aggressive and feel like screaming and hitting people over the head with a book. Now it's clear to me that under those circumstances I cannot study without endangering my health. But the question is, is it an allergy to study or a violent reaction to stupid assignments? And are there any tablets I can take or anything? And meanwhile, can I get a doctor's certificate for this? Because this is serious.