Recurrent rashes on both sides of the nose may be related to seborrheic dermatitis, rosacea, etc. The treatment is divided into general treatment and medication. 1. Seborrheic dermatitis: patients with seborrheic dermatitis will not only experience the symptoms of recurrent red rashes on both sides of the nose, but also itching and peeling of the skin, which is categorized into general treatment and drug treatment: General treatment: live a regular life, get enough sleep, regulate diet, limit fat and sugar diet, avoid drinking alcohol, avoid excessive cleaning, strengthen oil control and moisturizing. Medication: Salicylic acid can be used externally to inhibit bacteria and promote exfoliation, and hormonal creams such as hydrocortisone can be used for a short period of time when itching is intense. 2. Rosacea: In addition to recurrent red rashes on both sides of the nose, pustules will appear, accompanied by a burning or stinging sensation. Treatment is divided into general treatment and medication: General treatment: avoid excessive cleaning and damage to the skin barrier, strengthen moisturizing and emollient and physical sunscreen. Avoid excessive heat, cold and mental stress factors of adverse stimuli, avoid drinking and eating spicy food, local cold compresses can be appropriate. Drugs and photoelectric treatment: topical drug treatment includes antibiotics (such as fusidic acid, 1% clindamycin or 2% erythromycin), azelaic acid, etc.; systemic drug treatment includes anti-microbial agents (commonly used doxycycline or minocycline), isotretinoin and so on. Phototherapy such as LED light, intense pulsed light, etc. is mainly used to reduce including erythema as well as capillary dilatation. There are other causes of recurrent red rashes on both sides of the nose (e.g. acne, folliculitis), and patients are advised to go to the hospital in time and standardize the use of medication under the guidance of the doctor.