CRPS seems to have a mind of its own sometimes. There are things that we all do that we try to avoid that we know will cause flares. For some of us, those flares can last for days, weeks, months. Some of those things are simple, such as what we eat. We like to indulge in those things from time to time, but we usually end up paying for it. There are times that it just shows up for no reason at all, and seems like it never wants to leave. And of course, pushing too hard, even not pushing hard enough can cause flares. You have to find an equal balance.