Benign Fasciculation Syndrome and Migraine Aura without Headache: Possible Rare Side Effects of the BNT162b2 mRNA Vaccine? A Case Report and a Potential Hypothesis.

The BNT162b2 (Pfizer BioNTech) mRNA vaccine is an effective vaccine against COVID-19 infection. Here, we report an adverse event following immunization (AEFI) in a 48-year-old female patient who presented with fasciculations, migraine auras without headaches and in an increased discomfort of previously present palpitations, as well as excitation and insomnia. Her fasciculations were intermittently present until the time this paper was written, starting from the 6th day post-vaccination; they changed localization and frequency, but most commonly they were generalized, affecting almost all muscle groups. The patient also suffered from two incidents of migraine auras with visual kaleidoscope-like phenomena without headaches a few months after the vaccination. These symptoms were considered to be AEFI and no causal relation with the vaccine could be proven.

Report of the Croatian Society for Neurovascular Disorders, Croatian Medical Association. Evidence based guidelines for treatment of primary headaches--2012 update.

These guidelines have been developed to assist the physician in making appropriate choices in work-up and treatment of patients with headaches. The specific aim of the Evidence Based Guidelines for Treatment of Primary Headaches--2012 Update is to provide recommendations for establishing an accurate diagnosis and choose the most appropriate therapy in the group of patients with primary headaches, based on a comprehensive review and meta-analysis of scientific evidence with regard to treatment possibilities in Croatia. These data are based on our previous Evidence Based Guidelines for Treatment of Primary Headaches published in 2005 and other recommendations and guidelines for headache treatment.