1. A Sore arm
One of the most common side effects of the hepatitis A vaccine is a sore arm or a sore thigh. This is because this vaccine is injected into the muscle of the upper arm in most adults or in the thigh muscle of most children. Because the needle is injected into the muscle, the muscle sometimes becomes very stiffened during the process and this can cause some muscular pain the arm or leg. However, this side effect usually goes away within a few days. Massaging the area, applying ice or heat and taking Tylenol usually help elevate the pain cause my the hepatitis A vaccine.
2. Less Common Side Effects
Some of the less common side effects sometimes experienced with the hepatitis vaccination are headache, loss of appetite, fatigue and a low-grade fever. These symptoms usually begin two to three days after the vaccine has been administered and can range in grade from very light to very heavy. They usually last a couple of days. If you experience any of these symptoms for more than two to three days after the administration of the hepatitis A vaccine, you should call your doctor immediately.
3. Rare Side Effects
On a rare occasion, the patient will have an allergic reaction to the hepatitis A vaccination. When this occurs, there is usually a lot of itching, redness, swelling and pain in the area where the injection was administered. These symptoms can remain in the area of the injection or spread out over the body. People who have an allergic reaction, should seek a doctor immediately. In very rare occasions, an allergic reaction can be deadly. Therefore, it is very important to monitor the injection site for at least a week after the injection has been administered.
4. What to do With Side Effects
If you experience any of the listed side effects or anything else that does not appear to be normal, you should contact your doctor as soon as possible. Most side effects go away after a few days; however, if they persist, then you need to go see a doctor. You should watch for side effects or other symptoms for about week after the vaccination has been administered.
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