Patient's question:
Cry at 7 o'clock in the evening, about the previous treatment and effect:，：...Doctor's answer:
Having a normal vaccine reaction! Advice: Local reactions may occur in some individuals 12–24 hours after vaccination with a subcutaneous or intramuscular vaccine, where redness and swelling appear again at the vaccination site, accompanied by mild swelling and pain. Generally, redness with an average diameter of <2.5 cm is considered a weak reaction; 2.6–5.0 cm is a moderate reaction; and >5.1 cm is a strong reaction. In some cases, apart from redness and swelling, local lymph node enlargement or lymphangitis may also occur, which is also referred to as a strong reaction. These reactions usually subside within 48–72 hours and rarely persist for 3–4 days. When a live vaccine is administered, a special form of local reaction may occur. For example, after intradermal vaccination with BCG, redness and swelling may reappear at the site after about 2 weeks, followed by local inflammation, and occasionally swelling of the lymph nodes on the same side of the armpit. Generally, it takes about 2 months for the area to form a scab and leave a scar. Vaccines containing adjuvants may cause recurrent nodules in a small number of individuals at the vaccination site. Seek medical attention if necessary!