Redness and swelling inside the nose indicate the presence of inflammation, and common causes include nasal vestibule boils and canker sores, nasal vestibulitis, acute and chronic rhinitis, and sinusitis. It is recommended to go to the ENT department of the hospital as soon as possible if you have redness and swelling in your nose. 1. Nasal vestibular boils and carbuncles: acute suppurative inflammation, which can lead to localized redness, swelling and hot pain in the vestibule, and in severe cases, fever and general discomfort may also occur. 2. Nasal vestibulitis: usually occurs when the local skin is broken and bacterial infection occurs due to bad habits such as picking the nose and plucking nose hairs. It can be manifested as redness, swelling and tenderness of the nasal vestibule skin. Seriously, it can also lead to localized skin erosion and cracks. 3. Acute and chronic rhinitis, sinusitis: can cause nasal mucosa congestion, edema, in the clinical examination of the nasal cavity, there will be redness and swelling in the nose. There will also be nasal congestion, runny nose, headache, loss of smell and other symptoms. To summarize, the appearance of intranasal redness and swelling, it is recommended to consult a doctor in a timely manner, and follow the doctor’s instructions for treatment.