Meghan King Edmonds is opening up about heartbreaking news regarding her 13-month-old son Hart.

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The “Real Housewives of Orange County” star posted on her blog “My Hart”, an entry in which she reveals that her son has “irreversible brain damage.”

“From the minute he was born I knew something was different with Hart. The nurses struggled to straighten his legs to measure his length. He suckled hard, shallow, and often until I bled and he spit up black,” she wrote.

After multiple doctors visits and finally an MRI, Hart’s neurologist reached a diagnosis.

“Hart has minor Periventricular Leukomalacia on both sides of his brain (namely the white matter), but more so on his right,” King Edmonds wrote. “She said that this explains all of my concerns: the rigidity in his muscles, the (somewhat) delayed physical milestones, the lack of fluidity with arm and leg movements, the stiffness in joints, the weakness in his lower back, the somewhat favoured use of his right side.”

The 34-year-old continued, “She told me this mainly occurs in premies and since he was not a premie (he was born at 37 weeks gestation) she believes this damage somehow occurred ‘a couple months before he was born.’ She explained that he is at risk for being diagnosed with Cerebral Palsy and will be monitored.”

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Just days after opening up about Hart’s diagnosis, King Edmonds shared an adorable video of her little one after teaching him to cheers with his favourite blue cup.

In the short clip posted to the reality star’s Instagram stories, the family nanny, Carly Wilson, is heard chatting with Hart.

“Okay, ready? Cheers! Take a drink,” Carly instructed. “Good job, Hart.”

Instagram/Carly Wilson

In the midst of her son’s health problems, the reality star has also been going through a difficult time in her marriage after recent revelations of her husband Jim Edmonds’ infidelity.

“That night Jimmy and I went out to dinner for the first time in weeks,” she wrote. “I explained to Jimmy how we are not somehow compromised or punished for having a child with special needs (whatever that may or may not mean!), we are BLESSED. I will go on about this another time but just know that I do not see his diagnosis as anything but a gift: we were chosen to take on this special person. I truly feel as if we’ve doubled down and won the underdog hand. Truly.

“This doesn’t mean his diagnosis isn’t a challenge… or a little bit sad, or that I don’t feel a little bit guilty. Because yes – just yes – to all of those things.”