![]() "If your symptoms are persisting and not getting better with Tylenol or Advil, the fever is not climbing down, or something feels off or very severe, you should definitely contact your doctor as well," Dr. That being said, a rash on your arm after the Moderna shot specifically is reportedly harmless. Parikh did indicate that if you're having any type of rash at the injection site or elsewhere, she suggests contacting your healthcare provider. Swollen lymph nodes are nothing to worry about, though Dr. Interestingly enough, my sister said after the second dose that she felt like the lymph node swelling was more expansive than the first time. Parikh said that lymph node swelling or not, you may have more of a reaction after the second dose - which is consistent with what has been reported about side effects to date. (Note: she actually got her second COVID-19 vaccine dose the day before we spoke over the phone, and she said her arm was very sore).ĭr. Parikh added that she hasn't seen lymph node swelling as one of the commonly reported side effects in comparison to others such as fatigue, fever, chills, and joint or muscle pain that last up to 48 hours. The professor told POPSUGAR that she suspects this same reaction could take place with COVID-19 vaccines to come, not just the mRNA vaccines we have currently. the magic happens! #stitch with #turnsoutthat #immunology #macrophage #closedcaption #science #covid19 #vaccine #Wee ♬ original sound - ProfTracy "Now, the information from the injection here down lower in the arm is going to travel to the lymph node, tell those cells to start making more of themselves, and it's going to swell the lymph node as part of the response because that's where the magic happens," the professor says. White blood cells called B and T cells - B cells create antibodies - are concentrated in your lymph nodes, including the ones in your armpit. ![]() This inflammatory response is followed by the creation of antibodies. She notes that there's a localized inflammatory response at the injection site, which makes it warm and tender. One college professor who goes by the TikTok username and who has a PhD in microbiology and immunology, further explains this concept in the video ahead. Parikh explained, and the reason why the particular lymph nodes near your armpit might swell is because they're typically the ones closest to the injection site (your arm). This goes, she said, for injection of any vaccine, "and it's an expected side effect." There are immune cells in your lymph nodes, Dr. Purvi Parikh, MD, an immunologist with Allergy & Asthma Network who is also a co-investigator on COVID-19 vaccine trials at NYU, told POPSUGAR that swollen lymph nodes are your body's way of showing that it is processing the vaccine despite the fact that actually developing an immune response may take up to a few weeks. In fact, the FDA even lists " swollen lymph nodes in the same arm as the injection" as a side effect of the Moderna vaccine, and swollen lymph nodes is also listed under potential reaction to Pfizer's option. This particular side effect of the COVID-19 vaccines is a normal reaction. ![]() She called it "unpleasant," though the soreness eventually subsided, and she later realized it was her lymph node. It was similar to the soreness experienced with an ingrown hair, but was deeper and there was more of a lump. When my twin sister got the first dose of the Pfizer-BioNTech COVID-19 vaccine at the end of December, she kept noting that her armpit felt swollen.
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