Nose redness can be caused by friction, rosacea or seborrheic dermatitis. 1. When upper respiratory tract infections and other diseases, there will be coughing, sneezing, etc. At this time, if you frequently blow your nose, can be due to tissue friction as well as extrusion of the skin on both sides of the nose caused by redness, it is recommended to use a wet towel to gently wipe. 2. Rosacea: commonly known as rosacea, an inflammatory skin disease that occurs in the middle of the face with persistent erythema and capillary dilatation, with symmetrical erythema on the nose, cheeks and other parts of the face, and redness of the skin due to alcohol, temperature changes and other causes. 3. Seborrheic dermatitis: it occurs in areas with more sebum overflow, such as the face can occur in the nasolabial folds, the two sides of the nose and other parts of the skin inflammatory reaction, can form erythema, desquamation, itching can occur. If the redness on both sides of the nose is caused by pathological factors, it is recommended to consult a doctor in time and follow the doctor’s instructions.