Four trial participants who received the Pfizer Covid-19 vaccine experienced facial paralysis, according to the Food and Drug Administration. The FDA said the issue should be monitored as the jab becomes more widely available.
The potentially concerning cases were revealed after the US drug regulator published an analysis of the Pfizer-BioNTech vaccine ahead of a meeting to consider emergency use authorization for the jab in the United States.
According to the documents, Bell’s palsy, a form of temporary facial paralysis, was reported by four participants during phase 3 trials. The individuals had been administered the jab, and no members of the placebo group experienced similar adverse effects.
The condition resembles a stroke, with most sufferers watching helplessly as one side of their face droops and their muscles go limp. In some rare situations, both sides of the face may become paralyzed. It is unclear what causes Bell’s palsy, although the temporary paralysis usually goes away on its own.
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