To reveal the causes of swelling and pain in children's arms after influenza vaccination.

Although influenza vaccine is necessary, many children will have swelling and pain in their arms after injection. What the hell is going on here? Let's reveal the secret for you.

Mild allergic reaction

It is possible that the skin is red and swollen due to a slight allergic reaction. But don't worry, this allergic reaction usually goes away by itself.

Normal vaccine reaction

Vaccination may cause local irritation, causing redness, induration and pain. This is a normal vaccine reaction, so don't worry too much.

Hot compress promotes local blood circulation.

You can try to use hot compress to promote local blood circulation and help the swelling and induration dissipate. Usually after a day or two, these symptoms will disappear.

Skin testing and precautions

In order to prevent and alleviate these discomforts, we suggest that you have a skin test before vaccination. After vaccination, remember not to take a bath and avoid pressing the needle mouth with your hand.