Is it normal for the Pfizer and Moderna vaccines to cause swelling in the armpit?

The swelling in the armpit was a recognized side effect in the large trials of the Moderna and Pfizer-BioNTech vaccines. According to The New York Times, in Moderna's study, "11.6% of patients reported swollen lymph nodes after the first dose, and 16% after the second dose.
Takedown request   |   View complete answer on yalemedicine.org


How long does it take for swollen lymph nodes to go down after the COVID-19 vaccine?

“Enlarged lymph nodes are visible as early as one day after vaccination, and they can remain enlarged for a month or more,” says Dr. Desperito. (Keep in mind that while you may stop feeling a swollen lymph node, which can feel like a lump in your armpit, it may still be visible on a scan.)
Takedown request   |   View complete answer on healthmatters.nyp.org


What are the possible side effects of the Moderna and Pfizer COVID-19 vaccines?


Possible side effects: Pain, redness, or swelling at the site where the shot was administered, and/or tiredness, headache, muscle pain, chills, fever, or nausea throughout the rest of the body. If these side effects occur, they should go away in a few days. A few side effects are serious, but rare.

Takedown request   |   View complete answer on yalemedicine.org


How do you know if you are allergic to the COVID-19 vaccine?

An immediate allergic reaction happens within 4 hours after getting vaccinated and could include symptoms such as hives, swelling, and wheezing (respiratory distress).
Takedown request   |   View complete answer on cdc.gov


What should I do if I have swelling after receiving the COVID-19 vaccine?


Tell your doctor right away if you have a rash, itching, a fast heartbeat, trouble breathing, trouble swallowing, or any swelling of your hands, face, or mouth after receiving the vaccine.

Takedown request   |   View complete answer on mayoclinic.org


Health check: Swollen lymph nodes after receiving COVID-19 vaccine



Is it normal for your arm to swell after a COVID-19 booster vaccine?


The hypersensitivity can cause redness, swelling, warmth, hardness, itchiness and discomfort around the site of injection. The affected area sometimes grows relatively large and can look like a welt. Symptoms might take days or up to a week to appear.

Takedown request   |   View complete answer on cedars-sinai.org


When will my COVID-19 vaccine side effects go away?

Side effects can affect your ability to do daily activities, but they should go away in a few days.
Takedown request   |   View complete answer on cdc.gov


What to do if you get an allergic reaction from the COVID-19 vaccine?

If you get a COVID-19 vaccine and you think you might be having a severe allergic reaction after leaving the vaccination provider site, seek immediate medical care by calling 911.
Takedown request   |   View complete answer on cdc.gov


Can you have a late allergic reaction to the COVID-19 vaccine?


Delayed urticarial reactions — Occasionally, patients develop a few hives and/or mild angioedema several hours or days after administration, as with other vaccines.

Takedown request   |   View complete answer on uptodate.com


Can the Moderna COVID-19 vaccine cause allergic reactions?

There is a remote chance that the Moderna COVID-19 Vaccine could cause a severe allergic
reaction. A severe allergic reaction would usually occur within a few minutes to one hour after
getting a dose of the Moderna COVID-19 Vaccine. For this reason, your vaccination provider
may ask you to stay at the place where you received your vaccine for monitoring after
vaccination. Signs of a severe allergic reaction can include:
• Difficulty breathing
• Swelling of your face and throat
• A fast heartbeat
• A bad rash all over your body
• Dizziness and weakness

Takedown request   |   View complete answer on fda.gov


What are the possible side effects of the Moderna COVID-19 vaccine?


Possible side effects: Pain, redness, swelling in the arm where the shot was administered; tiredness, headache, muscle pain, chills, fever, nausea throughout the rest of the body. If any of these side effects occur, they should go away in a few days.

Takedown request   |   View complete answer on yalemedicine.org


What are the common side effects of the Moderna COVID-19 booster vaccine?


The most commonly reported side effects by individuals who received a booster dose of the Moderna COVID-19 Vaccine after completion of a two-dose primary series were pain, redness and swelling at the injection site, as well as fatigue, headache, muscle or joint pain and chills.

Takedown request   |   View complete answer on fda.gov


Has there been any serious adverse events as a result of taking the Pfizer-BioNTech COVID-19 Vaccine?

Serious adverse events, while uncommon (<1.0%), were observed at slightly higher numerical rates in the vaccine study group compared to the saline placebo study group, both overall and for certain specific adverse events occurring in very small numbers.
Takedown request   |   View complete answer on fda.gov


Can COVID-19 vaccine cause enlarged lymph nodes?

A COVID-19 vaccine can cause enlarged lymph nodes in your armpit or near your collarbone on the side of your body where you received the injection.
Takedown request   |   View complete answer on yalemedicine.org


Does having fever, body pain, and swollen lymph nodes after the COVID-19 vaccine mean I am sick?

These symptoms do not mean you are sick. They signal that your immune system is responding to the shot and building up protection against the coronavirus.

Takedown request   |   View complete answer on hopkinsmedicine.org


How long does it usually take for your body to build up immunity after having a full specific COVID-19 vaccination scheme?

It takes a couple of weeks for your body to build immunity after vaccination.
Takedown request   |   View complete answer on goodrx.com


Is it normal to get a rash after receiving the COVID-19 vaccine?

Skin problems such as itchiness, rashes, hives and swelling can occur in some individuals after receiving a COVID-19 vaccine, but it's not clear how common these reactions are or how frequently they recur with a subsequent vaccination.
Takedown request   |   View complete answer on massgeneral.org


When do COVID-19 vaccine side effects appear?


You probably experienced COVID-19 vaccine side effects fairly quickly when you had your initial injections. The same is true for COVID-19 vaccine booster shots: Most people notice side effects within the first 24 hours. The symptoms typically only last a day or two. Some people don't notice any side effects.

Takedown request   |   View complete answer on hackensackmeridianhealth.org


What are some rare severe allergic reactions to mRNA COVID-19 vaccines?

“Overall, severe allergic reactions to COVID-19 mRNA vaccines, including life-threatening anaphylaxis reactions such as low blood pressure and difficulty breathing, are rare, on the order of five cases per million vaccine doses administered,” noted Dr. Guerrerio.
Takedown request   |   View complete answer on nih.gov


Can you take antihistamines with the COVID-19 vaccine?


Pretreating with antihistamines is not recommended because it does not decrease the chance for anaphylaxis and may mask important signs of an allergic response to the vaccine.

Takedown request   |   View complete answer on chop.edu


How rare is a severe allergy or anaphylaxis after the COVID-19 vaccine?


Key Takeaways. Among 52,805 health care employees who received mRNA COVID-19 vaccines, 2% experienced allergic reactions, and anaphylaxis occurred at a rate of 2.47 per 10,000 individuals.

Takedown request   |   View complete answer on massgeneral.org


Why do people who had COVID-19 have a strong reaction to the vaccine?


The next time you encounter the pathogen, these responses will kick in faster and stronger, because your immune system is already primed to recognise and respond to it. This is why people who have already recovered from COVID-19 may experience more of these mild reactions.

Takedown request   |   View complete answer on gavi.org


Is it normal to have side effects after second COVID-19 vaccine?

Side effects after your second shot may be more intense than the ones you experienced after your first shot. These side effects are normal signs that your body is building protection and should go away within a few days.
Takedown request   |   View complete answer on cdc.gov


Is it normal that I feel worse after second COVID-19 shot?


This is normal and expected, but it doesn't happen to everyone. Even if you feel worse after the second shot, the side effects should still resolve within a few days.

Takedown request   |   View complete answer on hackensackmeridianhealth.org


What are the common side effects of the Johnson and Johnson COVID-19 vaccine?


Side effects that have been reported with the Janssen COVID-19 Vaccine include: Injection site reactions: pain, redness of the skin, and swelling. General side effects: headache, feeling very tired, muscle aches, nausea, fever. Swollen lymph nodes.

Takedown request   |   View complete answer on jnj.com
Next question
Are all bananas the same?