COVID arm is a harmless delayed skin reaction to the COVID vaccine. It happens about one week after the first or second shot of the Moderna vaccine but may also occur after Pfizer. If you didn’t get it before, you’re less likely to get it after a booster shot.
This time of year, you may be planning to get the latest booster of the Moderna or Pfizer-BioNTech COVID-19 vaccine along with your annual flu shot.
If you experience soreness, redness, swelling, or an itchy rash at the injection site about a week after getting the booster, you likely have COVID arm.
COVID arm is a rare reaction. It typically occurs around one week after the first or second shot vaccination. While not impossible, it is less likely to occur with a booster shot if you haven’t experienced it before.
In this article, we’ll clue you in on the symptoms and treatments of COVID arm. We’ll also explain why it happens.
COVID arm is a harmless immune system reaction that some people have after getting the Moderna vaccine. A
COVID arm is a delayed hypersensitivity skin reaction that occurs on or around the injection site. Its symptoms appear several days to a week after the first or second vaccination.
Symptoms of COVID arm include:
- itching, which can be intense
- a red or discolored rash that varies in size from quarter-sized to very large
- in some instances, the rash may spread to your hands or fingers
- skin feels warm to the touch
- hard lump under your skin where the injection took place
If you’re hearing about COVID arm a lot, you may be concerned that you will have this reaction. Keep in mind that COVID arm is relatively rare and never dangerous.
Millions of people worldwide are getting vaccinated, so even small occurrences of vaccine reactions and side effects are getting lots of attention.
COVID arm is thought to be an immune system reaction. Your immune cells respond to the muscle cells that have absorbed the mRNA vaccine.
The vaccine produces the SARS-CoV-2 spike protein, which the immune system
Since the COVID-19 vaccines are new, we don’t know definitively what exact mechanism triggers COVID arm symptoms. This reaction and others are continuing to be studied worldwide.
If you haven’t experienced COVID arm before after getting your first shot, you’re even less likely to get it now.
Less than 50% of people who got COVID arm after their first dose will get it after their second. It is probably even less likely to happen after subsequent booster doses.
Even if you have gotten COVID arm before, this should not stop you from getting another booster dose. COVID arm may feel mildly uncomfortable, but the reaction is not dangerous and will clear on its own.
The symptoms of COVID arm typically last about 5 days but may last as long as 21 days. It won’t escalate to a life threatening condition or serious allergic reaction and is not associated with anaphylaxis.
Usually, the symptoms of COVID arm resolve on their own. However, talk with a medical professional if your symptoms are severe or if you feel very uncomfortable or worried.
Treating COVID arm will not reduce your immune system’s response to the vaccine. Your immune system has already indicated it’s responding robustly.
COVID arm should also not stop you from getting your second shot. Sometimes, your doctor or vaccination provider may recommend alternating arms if you had a strong skin reaction to your first vaccine.
Even though it’s not serious, COVID arm can be uncomfortable. At-home treatments that reduce pain, swelling, and itching
- cool compresses
- topical steroids
- topical pain medication
- oral antihistamines
- acetaminophen or nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (Advil, Motrin).
COVID arm is a minor annoyance that will disappear within a few days. COVID-19 is a life threatening condition, and the vaccine is highly protective against the virus SARS-CoV-2, which causes COVID-19.
A recent study by the
If you’re worried about COVID arm, keep in mind that the protective benefits of the COVID-19 vaccine far outweigh the risks associated with COVID arm or developing COVID-19 itself. It’s also important to talk with your doctor to learn more about the COVID-19 vaccine.
Anaphylaxis from a COVID vaccine is also very rare, occurring in only
Another complication of the mRNA vaccine can be myocarditis. While less rare than anaphylaxis, this is still pretty uncommon.
Other skin reactions can also occur after getting the shot that may look like COVID arm but develop closer to the time you get the shot. They may happen right after, within a day, or within 2-3 days. They may also affect other parts of the body.
Any severe skin reaction after the vaccine is also
COVID arm is a delayed hypersensitivity reaction that occurs mostly from the Moderna vaccine. Onset is typically around one week after vaccination. Itching, pain, and swelling are the main symptoms.
COVID arm is a relatively rare occurrence, which should not be confused with the early onset arm reactions caused by many vaccines. It resolves on its own within a few days.
You may want to consider talking with your doctor to learn more about the COVID-19 vaccine’s benefits and side effects.