Strictly star Dr Ranj appeared on This Morning today to explain the symptoms of the mysterious new inflammation bug in kids which could be coronavirus-related.
The illness hit headlines this week after doctors across the UK were sent an urgent alert about it.
The condition, which is yet to be named, is thought to affect children, and may be related to COVID-19.
It's believed to cause symptoms including abdominal pain and cardiac inflammation.
During his stint on the ITV show today, Dr Ranj tried his best to explain the condition, which is thought to be similar to Kawasaki disease which causes swelling, skin rashes and in serious cases - inflammation of the arteries and heart.
He insisted not enough is known about the illness to say whether it is linked to the coronavirus outbreak or not.
He said: "A number of children who have been admitted to hospital, some of which have ended in intensive care with a certain pattern of illless which is a bit worrying.
"Some of them have tested positive for coronavirus and some of them haven't.
"This alert went out to health care professionals to warn them to be extra vigilant.
"What we've seen is these children have hyper inflammatory syndrome, which is lots of inflammation around the body. some of their symptoms are similar to a condition called Kawasaki disease."
Dr Ranj previously explained the news in a video posted on his Instagram page, explaining the situation to parents.
He said: "Basically what has happened, is a medical alert when out to health care professionals across the country over the weekend just advising them to be extra vigilant...
"Because we've seen what looks like a pattern of illness in amongst a small number of children who have been admitted to hospital, some of which are in intensive care.
"Some of them have tested positive for coronavirus and some of them haven't.
"We are not sure whether this pattern of illness that we are seeing could be related to coronavirus at all.
"What we are seeing is widespread symptoms of inflammation and some of the things are similar to another condition that we know does affect children called Kawasaki disease.
"However, what we don't know is whether these are the same thing or whether they're caused b the same thing or whether this is actually caused by coronavirus at all or whether we're dealing with something entirely different...
"We advising everyone to be extra careful...
"For parents and carers at home, the advice has not changed. The vast majority of children who get coronavirus will only get a mild illness and be absolutely fine."
He went on to urge any parents to seek medical advice if their child gets really poorly.
