The express.co.uk reports diarrhea is one of the most common and an early symptom of COVID-19, experienced by "thousands of patients" during the pandemic.
According to the ZOE COVID Symptom Study app, diarrhea is a tell-tale symptom of COVID.
"Diarrhea caused by COVID-19 is similar to the upset tummy you might get from a regular stomach bug, such as rotavirus or norovirus," says the Study App.
"We think COVID-19 causes diarrhea because the virus can invade cells in the gut and disrupt its normal function," the health body adds.
While the reason behind why COVID-19 causes this symptom is still uncertain, experts recommend getting tested once this digestive problem, along with other sure-shot symptoms, arises.