You have to be careful if you have been diving, and plan to fly the next day, to make sure you are safe to do so. Ask a doctor or an experienced diver to make sure. Even though they pressurize the cabin of the airplane it can still be different from sea level and if you've been diving even a little bit of difference in altitude might make a difference to your health.
Not very common, but something to be aware of. They had it as a medical mystery on House once I think, although I don't know how accurate it was.