Harvey, 18, was taken to hospital over the weekend after suffering breathing difficulties and a high temperature. He remains in intensive care, though Price has reassured fans that he is now in a “stable condition.”
Harvey has the rare genetic condition Prader-Willi syndrome and is partially blind. He is also autistic and has learning and behavioural difficulties.
In his initial post, 31-year-old Boyson, who dated the reality star on and off for around two years, wrote “No matter what happens [sic] in the past I wish my little mate a speedy recovery,” adding the initials “HP” and a heart.
The former glamour model, 42, shared a screenshot of Boyson’s post on her Instagram story and appeared less than impressed that her former partner had posted a message publicly rather than reaching out to her directly.
“Dear Kris Boyson, this is such a cheap way of wanting press off the back of my son being in intensive care!” she wrote.
“You could have messages privately to me or my family and still haven’t!”
She added: “You didn’t care if my kids had a mum or not due to your actions so go do one you fame hungry wannabe t**t.”
In an update shared on Wednesday, Price confirmed that Harvey’s condition remained “complex” and thanked fans for their message of support.
She described Harvey as “so brave” and a “fighter.”
Price is also mother to Junior, 15, and Princess, 13, with first husband Peter Andre, and Jett, six, and Bunny, five, with third husband Kieran Hayler.