Nose redness is usually caused by rosacea, folliculitis, seborrheic dermatitis and other diseases, which can be treated with topical medication, systemic medication and surgery as prescribed by the doctor. 1. Rosacea: also known as rosacea, the cause of which is still unclear and is mostly related to genetics, microbial infections and other factors, patients will have erythematous lesions such as erythema, papules, pustules and other lesions on the nose, cheeks, forehead and other parts of the body, which may be accompanied by burning or tingling sensation. Should avoid excessive cleaning of the affected area, strengthen the moisturizing and emollient and sun protection, and can follow the doctor’s instructions to apply benzoyl peroxide, azelaic acid, etc., and in severe cases, oral doxycycline, isotretinoin, etc.. 2. Folliculitis: mostly due to bacterial, fungal and other pathogenic infections, occurring in the nose, neck, chest and other parts of the skin lesions in the early days for the red papules, can quickly develop into pustules, surrounded by a red halo. If it is caused by bacteria, you can apply fusidic acid, mupirocin and so on, or oral amoxicillin, doxycycline and so on. If it is caused by fungus, apply ketoconazole, miconazole, etc., or take itraconazole, terbinafine, etc. orally. If the condition is serious, incision and drainage can be taken. 3. Seborrheic dermatitis: facial seborrheic dermatitis often involves the arch of the eyebrow, eyelids, nose and lips and other parts of the skin lesions are diffuse erythema, flaking. Ketoconazole lotion can be used to wash the hair, in addition, the nose can be coated with hydrocortisone, tacrolimus, etc., extensive lesions, oral itraconazole and other antifungal drugs. In addition, there are many other reasons that can cause redness of the nose, it is recommended to seek medical attention in time, under the guidance of the doctor for diagnosis and treatment.