An eight-month old baby was left with lips so swollen they poured with blood after developing a severe inflammatory syndrome linked to coronavirus.
Elle Adams, from Tameside, Manchester, says the terrifying Kawasaki-like illness left her son Lewis "a little wreck", Manchester Evening News reports.
Warning other parents of the dangers of the potentially fatal condition, she says baby Lewis has spent a week in hospital crying in pain.
Normally a "happy, healthy, chubby little boy", Lewis first developed a fever last Sunday.
After becoming irritable and losing interest in food and milk, Elle, who is from Ashton, says that by Monday he had developed spots on his cheeks.
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"We didn't think much of it, but by the evening it had spread", the 40-year-old said.
A scar from a vaccination turned into a "pinky orange lump", and the rash began developing on other parts of his body, in folds of skin around his neck and on his ear.
After at that point phoning 111, Elle was told to take Lewis to A&E at Tameside Hospital.
Elle, a teacher who has been on maternity leave, had heard about an inflammatory disease called Post Covid-19 Inflammatory Syndrome.
The Kawasaki-like condition mainly affects children under the age of five and is thought to be a delayed immune reaction to coronavirus.
"I thought 'please don't be that'. That was just at the back of my mind, I thought it wouldn't be that, just an infection", she said.
Lewis was tested for coronavirus, a standard procedure for children going into hospital, and the result came back negative.
He was moved into an observation room but his rash became worse, leaving parts of his body red and swollen.
The baby was given Piriton to stop the swelling as it looked like an allergic reaction, and antibiotics as medics feared he could be suffering from sepsis.
But on Wednesday, his whole body went bright red and he "looked like he had been in the sun all day".
He was given an Intravenous immunoglobulin - an IV drip with antibodies - for several hours, which brought the rash down.
Later, after medics ran a number of blood tests, it was discovered that he had antibodies for coronavirus.
At that point, he had to be moved to Royal Manchester Children's Hospital for specialist care, where doctors monitored his heart as the condition can cause a heart attack.
"This is why it is so scary. It's the things you can't see happening. They were constantly monitoring his blood pressure, his heart rate, and he had a heart scan", Elle said.
The scan showed no damage, she said.
Thankfully, over the course of Saturday, the rash on his legs and arms have thankfully gone away.
"He seems to be perking up, his fever has come down", Elle said
He is still in hospital, but is showing signs of improvement and "sass", she added.
"He was pulling out his feeding tube, he has had a bit of energy and sass," she continued.
Lewis, who is now on steroids, will need further checks and will take aspirin for six weeks to protect his heart.
Only one parent is allowed to stay with Lewis in hospital due to the lockdown, meaning her fiancé Simon is at home looking after their three-year-old daughter Lydia.
"It's been really scary, but very reassuring, due to the care he has received," Elle continued.
"It's been a sleepless week. Lydia has been really upset about him not being at home. I have been speaking to her on Face Time. She has been crying saying 'when are you home?'"
Elle would urge anyone in doubt about a rash or illness to call 111 like she did.
"I think you know your own child, but if they are unwell, make sure you do notice, and just ask for help," she said.