A study prepared by researchers at Yale University and published in the scientific journal has recorded a new mild side effect of the Moderna vaccine. It is a hypersensitivity skin reaction, dubbed the ‘covid arm’, which occurs about seven days after the first dose or two days later if it is the second.
The publication explains that this adverse reaction is different from the redness, mild pain or swelling that is common after vaccination. Thus, the symptoms of the ‘covid arm’ not only manifest days after the puncture, but also produce erythema, induration, pruritus and pain.
Pfizer causes skin rash and itching
This new finding comes a few days after the Pharmacovigilance Risk Assessment Committee (PRAC) of the European Medicines Agency has recommended that the technical data sheet and package leaflet of the (skin itching) vaccine be modified, such as reactions Uncommon onset adverse events (occur in less than 1 in 100 people). On the other hand, urticaria (raised, red and itchy skin rash) and angioedema (rapid swelling under the skin) should be updated as adverse reactions that occur rarely (in less than 1 in 1,000 people).
When the skin reaction after the Covid-19 vaccine should be seen by a doctor
Adverse reactions in the area of the puncture are the most common in vaccines. However, the dermatologist at the Hospital Clínic de Barcelona when urticarial eruptions appear after the third day. In addition, delayed reactions have also been reported in the form of “very large plaques, sometimes up to more than 10-25 centimeters, in the injection area. They do not appear immediately, but after the fourth or fifth day after the injection. injection,” she says.
The expert explains that these types of side effects are due to a response from the immune system and that they are not serious. However, the consultation with the doctor can be interesting because a series of advice can be given before taking a second dose. In addition, there are treatments for pain.
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