There are many reasons for itching on both sides of the nose, such as rosacea, contact dermatitis, eczema, fungal infections and so on. 1. Rosacea: is a special type of acne and androgen secretion in the body, follicle oil secretion increase, genetic factors, etc., will cause the expansion of the capillaries of the nose and the surrounding skin, easy to cause itching on both sides of the nose, erythema, rashes and other symptoms. 2. contact dermatitis: for example, local skin contact with external sensitizers commonly used cosmetics, skin care products, soaps, drugs and other local allergic reactions, may also cause itching on both sides of the nose. 3. Eczema: internal and external stimulation of a variety of factors causing inflammatory skin reactions, may also cause itchy performance on both sides of the nose. 4. Fungal infection: fungal infection caused by ringworm, lichen planus and other diseases, can also cause the phenomenon of itching on both sides of the nose. Itchy sides of the nose, there may be other reasons, it is recommended to go to the hospital in a timely manner to check, clarify the cause of the disease, and actively treat.