A man from California experienced severe burning in his mouth, making it nearly impossible for him to eat or speak after receiving the Covid vaccine.
The 39-year-old went to his local hospital due to a harsh burning sensation on the upper part of his tongue and an unusual ‘metallic’ taste, both of which he had been experiencing for about a year.
As noted in a medical case report published on April 29, his doctors connected this discomfort to his initial dose of the Pfizer Covid vaccine.
Right after getting vaccinated, he—having a prior history of neurological issues—felt a burning that started in his feet and spread to his mouth and cheeks.
When he got his second dose a month later, he noticed his body stiffening, and the burning sensation in his mouth prevented him from eating for two days.
By the time he sought medical help, the pain was distracting enough that it affected his work.
Doctors mentioned that the vaccine might have triggered burning mouth syndrome, which is characterized by a recurrent burning feeling, similar to that of being scalded.
They indicated that this could be the first known instance linked to the Pfizer vaccine, though they were careful to clarify that a direct connection couldn’t be firmly established.
In the Clinical Case Reports journal, the doctors speculated that the spike proteins from the vaccine could have caused an immune response, damaging protective layers around nerve cells called myelin.
This might offer some insight into why the Covid vaccine has been associated with rare neurological conditions like Guillain-Barré syndrome.
Experts generally assert that adverse reactions to Covid vaccines are quite rare and maintain that the benefits of vaccination significantly outweigh potential risks.
The man in this report, believed to have received treatment in California, had a background of neurological disorders including migraines, which could have contributed to his mouth pain.
He also dealt with bipolar disorder, which may heighten pain sensitivity during manic episodes.
Throughout his medical history, he shared that he was managing his existing bipolar disorder with medication and was also diagnosed with ADHD along with an underdeveloped right lung.
This case comes on the heels of a controversial Yale study suggesting that, in rare circumstances, vaccinated individuals might experience ‘post-vaccination syndrome,’ leading to symptoms like dizziness and brain fog.
The researchers emphasized the importance of recognizing such neurological signs, despite their rarity, and encouraged further investigation.
The report detailed how the patient reported a constant burning sensation, metallic taste, and dry mouth while visiting his clinic.
He rated his pain on a scale from six to ten and noted that he had received his first dose of the Pfizer Covid vaccine about a year earlier.
He recounted that approximately 90 minutes after his vaccination, he felt a burning in his feet that transitioned to his mouth and cheeks, after which he fainted.
Although the burning in his feet diminished, the discomfort around his mouth lingered.
He received the second dose a month later and, shortly thereafter, developed body stiffness, with mouth pain becoming so intense that he was unable to eat for two days.
Diagnostic tests, including an MRI and a biopsy of his tongue, showed no abnormalities.
Ultimately, he was diagnosed with burning mouth syndrome, characterized by persistent burning sensations in the mouth area.
This condition affects about 2% of Americans, translating to approximately 6.6 million individuals.
Researchers believe that nerve damage around the mouth triggers this syndrome, which may also be linked to factors like acid reflux, hormonal shifts, oral infections, and stress. However, in many instances, a definite cause remains elusive.
The treating physicians referenced the spike proteins in their analysis, indicating that they have been known to induce autoimmune responses as the body incorrectly identifies them as foreign entities. In rare cases, the immune system may target myelin, the protective layer surrounding central nervous system cells.
Recent case reports have shown that such a response might lead to conditions like Guillain-Barré syndrome, which can cause muscle weakness or paralysis, and Bell’s palsy, characterized by facial paralysis.
Yet, the researchers warned that the exact mechanisms remain unknown, and it’s not possible to definitively attribute the man’s burning mouth syndrome directly to the vaccine.
Doctors recommended that he rinse his mouth with capsaicin—an ingredient found in chili peppers—four times a day, as it’s believed to help desensitize pain receptors. They also suggested increasing his antidepressant dosage to better manage pain signals.
However, the clinical report noted that neither approach yielded effective results.
Instead, the patient found significant relief through tongue acupuncture, which involves inserting fine needles into different areas of the tongue, stimulating the release of natural pain-relieving chemicals like endorphins.





