In a French study from early 2005Most of the 56 cases examined were attributed to upper respiratory infections.
Today, scientists can identify more than 100 potential causes of smell loss and distortion, including viruses, sinusitis, head trauma, chemotherapy, Parkinson’s disease and Alzheimer’s disease, said Zara Patel, associate professor of otolaryngology at the university. Endoscopic skull base surgery.
In 2020, parosmia has spread significantly, frequently affecting patients with the new coronavirus who have largely lost and then regained their sense of smell before they begin to experience abnormalities in their sense of taste and smell.
In June of last year, article Published in the journal Chemical Senses, based on surveys, it revealed that 7 percent of patients who have experienced COVID-19 have a smell distortion.
A later study based on an online survey in the UK revealed that 6 months after the onset of COVID-19, 43 percent of patients who initially reported a loss of smell reported having parosmia, according to Article from the Journal of Rhinology. The article stated that this reappearance occurred on average 2.5 months after patients had lost their sense of smell.
This matches the experience of 31-year-old Monica Franklin from Bergenfield, New Jersey, who used to have a keen sense of smell.
Franklin, an outpatient occupational therapist, said she lost all sense of taste and smell in early April 2020, immediately after contracting COVID-19.