Little Carter Salmons is usually a cheerful toddler.
So when he woke grizzly and lethargic last week his mother Sorrel Davies knew something wasn't right.
Then he had a seizure in his father Hayden Salmons' arms.
By the time an ambulance arrived at their Royal Oak home, Carter, 2, was covered in blisters that appeared around his mouth, hand, feet and legs.
"Suddenly this rash appeared and he had these spots around his mouth, and on his hand, feet and over his legs," Davies said.