Redness and swelling with a bulge inside the nose may be caused by nasal boils, nasal vestibular folliculitis, or a combination of cysts and infections in the nasal cavity. Nasal boils will have obvious swelling raised, redness, heat and pain, the pain will be more obvious when touching, usually at first localized redness and swelling of small hard nodules, and then gradually enlarged, conical-shaped bulge. This condition can be considered a boil in the nose. There is also nasal vestibular folliculitis can also appear red, swollen and bulging symptoms. Nasal vestibule is distributed with more nasal hairs, if you often have bad habits such as picking and digging the nostrils, it is easy to damage the mucous membrane tissue of the nasal vestibule, bringing in bacteria, which can induce folliculitis and the symptoms of infection. In addition, if there are small cysts in the nose, once the infection is combined, there will be swelling and pain. It is recommended that the patient can go to the ENT department of the hospital for a detailed examination to determine the cause of the disease and then treat the cause of the disease.