In a report published at the end of March, the National Agency for the Safety of Medicines and Health Products (ANSM) alerted to the resurgence of Parsonage-Turner syndrome after vaccination against Covid-19 with Pfizer.
Often caused by stress or a viral infection, amyotrophic neuralgia, or Parsonage-Turner syndrome, can also develop after vaccination. In its report last month, the ANSM identified 43 cases detected since the start of injections of Pfizer-BioNTech vaccines against Covid-19 in France, including 27 between September 2021 and March 2022.
Consult the key figures and focus of the March 31 monitoring committee: https://t.co/jKBZ3oCUEK pic.twitter.com/84xSeiLnDs
—ANSM (@ansm) April 1, 2022
This syndrome is characterized by inflammation of the brachial plexus, namely a group of nerves located in the shoulder and the collarbone, occurring mainly at night, according to the Journal des Femmes. After this first stage, characterized by extreme pain in the neck and shoulder, a decrease in muscle strength and then a loss of muscle mass are observed in the shoulder.
Besides the sharp pain, other symptoms are increased sensitivity of the skin, burning and electric shock sensations, as well as strictures, ie a pathological tightening of an organ.
Concerning the treatments, the administration of cortisone is effective against this syndrome, just like the‘acupuncture and auriculotherapy, which significantly reduce pain.
Between December 27, 2020 and March 24, 2022, out of 109,511,000 injections of the Pfizer vaccine against Covid-19 carried out in France, 97,043 cases of adverse effects were detected by the ANSM.