"Abstract
... [T]here are many reports of side effects after getting a COVID-19 vaccine. According to these reports, vaccination can have an adverse event, especially on nervous system... Herein, we have provided a comprehensive review of documents reporting neurological side effects of COVID-19 vaccines in international databases from 2020 to 2022 and discussed neurological disorders possibly caused by vaccination...
Vascular complications in the brain
Due to the activity of the immune system, after the injection of COVID-19 vaccines, especially adenovirus-based type, thrombocytopenia, cerebral venous sinus thrombosis, ischemic stroke and intracerebral hemorrhage, have also been reported. The proposed mechanism for thrombocytopenia is the synthesis of IgG antibodies against platelet factor 4 (PF4), which activates platelets and blood clots in large venous arteries...
Acute neurological disorders
These disorders include, transverse myelitis, acute diffuse encephalomyelitis (ADEM), Bell’s palsy, GBS, encephalopathy and seizures... The COVID-19 vaccine-related convulsions can be attributed to the synthesis and release of spike proteins, which cause severe inflammation and hyperthermia...
Conclusion
... The most important and most common complications are cerebral venous sinus thrombosis (more about AstraZeneca), transverse myelitis (more about Pfizer, Moderna, AstraZeneca, and Johnson & Johnson), Bell's palsy (more about Pfizer, Moderna, AstraZeneca), GBS (more about Pfizer, AstraZeneca, and Johnson & Johnson), and the first manifestation of MS (more about Pfizer)."
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