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There is increasing evidence suggesting that COVID-19 causes both acute and chronic neurological [1] or psychological symptoms. [2] Caregivers of COVID-19 patients also show a higher than average prevalence of mental health concerns. [2] These symptoms result from multiple different factors.
The CNS viral diseases are caused by viruses that attack the CNS. Existing and emerging viral CNS infections are major sources of human morbidity and mortality. Virus infections usually begin in the peripheral tissues, and can invade the mammalian system by spreading into the peripheral nervous system and more rarely the CNS.
This causes dizziness, fainting, and exhaustion when standing for a long time. So, the longer they're upright, the more their blood pools in the lower part of their body.
The most recent COVID-19 vaccine should offer protection against the XEC variant, Russo says. “The most recent version of the vaccine seems to be reasonably well-matched,” he says.
The good news is that the FLiRT and LB.1 strains of the coronavirus don’t seem to spark any surprise symptoms. “The symptoms are similar to other COVID-19 strains,” says Dr. Lundstrom.
Even though many COVID-19 patients recover within 2–6 weeks of the onset of symptoms, some develop symptoms that come and go for months. The possibility has been raised, but needs to be investigated further, that patients with long COVID-19 may be predisposed to the development of lung cancer.
Symptoms of COVID-19. Some less common symptoms of COVID-19 can be relatively non-specific; however the most common symptoms are fever, dry cough, and loss of taste and smell. [1] [22] Among those who develop symptoms, approximately one in five may become more seriously ill and have difficulty in breathing.
A 2022 U.K. study that gathered self-reported data on COVID-19 symptoms via smartphone apps indicated that a sore throat became a more prevalent sign when Omicron's dominance rose in 2021 ...