Right now, it's not known why some patients' senses return normally and others' don't. He added that for taste, it seems like both support cells and actual taste cells "might be infectible" by the coronavirus, and the underlying mechanism behind taste alterations has "similarities" to smell. and one possibility is that in people with COVID, that might actually take extra long."Īs a result, the parosmia may arise when those sensory neurons are "reborn" and have to reintegrate into the body's olfactory system all over again, Datta said. "The sensory neurons have to be regenerated. "We think that in the people who have longer lasting anosmia, maybe the long-term lack of support from these (support) cells actually causes the sensory neurons to die," he explained.
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