It is possible that the redness and swelling are due to scratching the area. To help with this, it is recommended to avoid scratching as much as possible and to apply a fragrance-free cream such as Aveeno as often as needed. You can also apply a cold towel or ice to help relieve the symptoms. Usually, stopping the scratching and keeping the area hydrated are sufficient measures. Try these suggestions and reach out if you have any further questions or concerns.