Hello, the nasal mucosa injury can't be repaired by itself. It may be caused by inflammatory stimulation or surgical trauma. Treatment can be combined with specific conditions, such as conservative treatment and surgical treatment. The treatment of nasal mucosa erosion and bleeding is mainly microwave or radio frequency therapy to help nasal mucosa repair. You can apply a little antibiotic or steroid ointment 2-3 times a day. If the nasal mucosa is painful due to dryness, you should ask a doctor for medicine. Pay attention to protect your nose from dryness and try not to catch a cold. I wish your nose a speedy recovery.