For the last 4 years i have had sores on the inside of my nose. They come on very suddenly (only takes half an hour for one to form) and they are very very tender. They are usually on the inside, upper corner of my nostril, close to the front. But i have had them other places too. Always close to the front, not in the back of my nose.They usually start as a tender red spot and then grow into a small, white, pus-filled blister. If i am able to reach it to pop the blister it gives me some relief on the tenderness. It still hurts, but not as bad and then it will crust over and heal. If i dont pop it it gets increasingly tender ( i can feel it without touching it and even is very painful if i touch the outside of my nose) and then will go away after a few days. They come and go, and i get them in both nostrils. They drive me crazy! I have been to the doctor but they always tell me i need to come when i have a sore--so far i havent been able to coincide the two. Could this be a staph infection? What can i do?