Doctors in Chicago are warning that having persistent hiccups could be a possible new symptom for coronavirus.
A published report in the American Journal of Emergency Medicine describes the case of man who tested positive for the deadly virus after having hiccups for four days.
At first, the 62-year-old from Chicago showed no other symptoms.
He was admitted to hospital, and had his temperature checked which was 37.3C.
He also had a scan for his lungs which showed he had been struggling with his lung capacity, the Mirror reports.
He was put in an isolation room, where he tested positive for Covid-19. His temperature later increased to 38.4C.
The report stated: "Here we present a case of persistent hiccups as the presenting symptom of a Covid-19 infection in a 62-year-old man.
"To our knowledge, this is the first case report of persistent hiccups as the presenting complaint in a Covid-19 positive patient in emergency medicine literature."
The doctors from Cook County Health, Chicago, said patients with hiccups should not be dismissed, the Sun reports.
They added: "Physicians should keep Covid-19 infection on their differential as more cases are discovered through atypical presentations."
The NHS states the official symptoms of Covid-19 as a high temperature, a new and continuous cough, and a loss or change to your sense of smell or taste.
The NHS says that most people get hiccups sometimes but they should only last a few minutes.
You can usually wait for them to go away or treat them yourself without seeing a GP.
They are usually brought on by stress, strong emotions such as excitement, and eating and drinking.
