I get nasal ulcers all the time. I can be sitting doing nothing, minding my own business and next thing I know I get this incredible pain in my nose towards the nostril that brings tears to my eyes. It will last maybe 20 minutes, and then when I feel in there, I have a cut that just made itself. When attributed to lupus, they are eruptions rather than a drying out of skin. You can keep them totally lubricated to slow it down, but if you are prone to them, it will happen anyway. Mine last a few weeks with little to no healing. They finally just go away on their own.