Itchy red places: First, if there has been local trauma or stitches, this is not too worry, it is caused by the nerve growth process, you can apply cold compresses locally, and if necessary, you can also apply some spot-removing drugs to relieve the symptoms of itching. Second, it may be caused by allergy, which can be both oral food and some special drugs, or contact with special items, such as paints, cosmetics, etc. You can go to the hospital first to check, and the doctor will usually give oral desensitizing drugs, such as cetirizine, and at the same time apply topical furnace glycolic lotion to relieve the symptoms, and if necessary, you also need to lose desensitizing drugs, such as calcium gluconate, etc. Thirdly, there are other causes, such as localized specific bacterial infections that can also cause the symptoms. In short, if there is persistent redness and itching, you need to go to the hospital to clarify the cause.