Weird sleep pattern dangers?

Aside from making me incredibly tired, is there any short term danger to me staying up for 3 -4 days at a time, then sleeping for 24 hours straight? I have some severe sleep problems at the moment but im avoiding sleeping tablets because i would hate to build a dependency to them where i think i need them to sleep. I am obviously not driving or doing anything that would endanger others while im like this. I just need to know if there are any dangers to this sleep pattern short term.