Swelling and hardening of the nose can be considered to be related to acute nasal vestibulitis, nasal vestibular cysts with infection, folliculitis and other causes. Acute nasal vestibulitis: when suffering from sinusitis, rhinitis, nasal secretion infection, stimulation can lead to the occurrence of acute nasal vestibulitis, in the nasal vestibule area there will be mucosal congestion, swelling, pain symptoms, and there will also be the manifestation of the hardness of the swelling and pain of the nose. 2. Nasal vestibular cysts with infection: when there is a cyst in the nasal vestibule area, the lower part of the nose will be swollen and elevated, and once the infection occurs, it will involve the whole nose, resulting in pain and hardness of the nose. 3. Folliculitis: If you stay up late, eat spicy and irritating food, or don’t clean your nose thoroughly, it can cause bacterial infection, leading to folliculitis, which results in swelling and hardening of one side of the nose. It is recommended to go to the ear, nose and throat department of the hospital, and standardize the treatment after clarifying the specific causes and conditions.