After the booster shot generally refers to the new crown vaccine booster shot, after the new crown vaccine booster shot arm red, swollen, hard and itchy, can be improved through general treatment, drug treatment and other methods.
1. General treatment: the first 24 hours after vaccination can be localized cold compresses, after 24 hours can be localized hot compresses, through the local hot and cold compresses can play a role in reducing swelling;
2. medication: if the itching is serious, you can take oral levocetirizine tablets and other anti-allergy drugs under the guidance of the doctor to treat, you can use iodine povidone to carry out local disinfection, in order to prevent the infection of the site.
If after the general treatment and medication still does not relieve or further aggravate the symptoms, it is necessary to consult a doctor in time for treatment.