How Long Should Your Arm Be Sore After A Flu Shot

How Long Should Your Arm Be Sore After A Flu Shot?

After getting a flu shot, it's normal to experience some soreness in your arm at the injection site. This is a common reaction known as injection site soreness, and it usually lasts for a few days.

In most cases, the soreness is mild and doesn't interfere with your daily activities. However, some people may experience more severe pain, redness, or swelling at the injection site. If you're concerned about the pain or swelling, talk to your doctor or pharmacist.

Here's what you need to know about arm soreness after a flu shot:

What Causes Arm Soreness After a Flu Shot?

Arm soreness after a flu shot is a local reaction to the vaccine. When the vaccine is injected into your arm, it triggers an immune response. This response includes the release of inflammatory chemicals, which can cause pain, redness, and swelling.

How Long Does Arm Soreness After a Flu Shot Last?

The soreness usually starts within a few hours of getting the shot and reaches its peak within 1-2 days. It typically resolves within 3-4 days, but it can last up to a week in some people.

What Can I Do to Relieve Arm Soreness After a Flu Shot?

If you're experiencing arm soreness after a flu shot, there are a few things you can do to relieve the pain:

Apply a cold compress to the sore area.
Take over-the-counter pain relievers, such as ibuprofen or acetaminophen.
Rest your arm and avoid strenuous activity.
If the pain is severe or doesn't go away after a few days, talk to your doctor or pharmacist.

When to See a Doctor

In most cases, arm soreness after a flu shot is mild and doesn't require medical attention. However, you should see a doctor if you experience any of the following:

Severe pain, redness, or swelling at the injection site
A fever
Chills
Body aches
Nausea
Vomiting

These symptoms may be signs of an allergic reaction to the flu shot or an infection at the injection site.

Conclusion

Arm soreness after a flu shot is a common side effect that usually resolves within a few days. If you're experiencing severe pain, redness, or swelling at the injection site, or if you have a fever, chills, or other flu-like symptoms, talk to your doctor or pharmacist.