Nerve damage in cornea could be sign of 'long COVID,' study hints
Fox News
Nerve damage and a buildup of immune cells in the cornea may be a sign of "long COVID," a long-term syndrome that emerges in some people after COVID-19 infection, a new study suggests.
COVID-19 long-haulers experience a wide range of symptoms, and a large proportion report neurological problems, including headache, numbness in the body, loss of smell and "brain fog," or trouble thinking and concentrating, Live Science previously reported. This constellation of symptoms hints that long COVID may partly arise from damage to nerve cells in the body, said senior author Dr. Rayaz Malik, a professor of medicine and consultant physician at Weill Cornell Medicine-Qatar in Doha. Specifically, preliminary evidence suggests that long COVID may involve damage to small nerve fibers — thin wires that branch off of specific nerve cells in the body and relay sensory information about pain, temperature and itchiness, among other sensations to the central nervous system. Small-fiber nerve cells also help control involuntary bodily functions, such as heart rate and bowel movements; therefore, damage to these cells can cause a wide array of symptoms.
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