hello! It may be pseudocyst of auricle! It is generally painless. Don't always stimulate it. Now it will hurt and there may be inflammation. You can take some anti-inflammatory drugs. After the inflammation is controlled, it is suggested to go to the otolaryngology department of the hospital for treatment. Early physical therapy, such as infrared radiation, can also be used to draw fluid and pressure bandage under aseptic operation. If you have recurrent attacks, you should consider surgery. Usually, you should have a light diet and don't always touch it with your hands.