The main reasons for itchy and blistered lips are as follows: first, swollen, itchy and blistered lips due to allergies, suspicious allergenic food, drugs, lipstick and other cosmetics can cause angioneurotic edema of the lips, the main symptom is the sudden appearance of swollen, tight, painful and itchy discomfort of the lips, such as mild symptoms can be left untreated, if the whole body also appears red rash and wind, patients need to take oral desensitizing drugs; second The patient should keep sufficient rest to improve the immunity of the body, and at the same time can take antiviral drugs, such as the use of antiviral pellets for treatment; third, suffering from chronic lip infection, due to the environment wind and sun, cold, dryness, licking and biting the lips, etc. The unhealthy habits, as well as the unbalanced nutrition of the organism can cause lip inflammation; there are many kinds of manifestations of lip inflammation, such as chapping, flaking, erosion, blistering, redness, swelling and hyperplasia.