The Only Way Is Essex's Lydia Bright's sister, Georgia, was taken to hospital after falling ill with the deadly condition, sepsis.
Their mum, Debbie, who also appeared on the ITVBe reality programme took to social media to share Georgia's struggles as she opened up on her recent health issues.
Debbie, 58, explained that Georgia had initially been unwell and was subsequently diagnosed with tonsilitis before her condition rapidly deteriorated.
Having noticed that her daughter continued to remain unwell, Debbie moved Georgia back to the family home before she took a turn for the worse and was rushed to the emergency department.
Taking to Instagram in view of her 163,000 followers, Debbie shared a series of snaps with Georgia alongside the caption: " All too often we take our health for granted, we believe our bodies are doing just fine, our health believe me is our wealth yet we fail most of the time to nurture ourselves with kindness, time and nourishment. Saying all of this it could be a tiny thing that turns out something so desperately serious we just don’t see it coming.
"My daughter Georgia become ill a few weeks ago, anyone who knows Georgia knows she's 100 miles an hour so when she takes to her bed it means she's unwell."
Debbie went on to add: "I moved her back with me, nursed her day and night. A visit to the doctors diagnosed with tonsillitis. Things went from bad to worse…
"I rushed her to hospital where she was rushed through with SEPSIS. This week a documentary hit our screens 48,000 people die of sepsis every year."
She went on to list the possible symptoms which include difficulty breathing, difficulty swallowing, rashes, photophobia (eye discomfort from bright lights), abdominal pain, blood in urine, confusion, jaundice and signs of a stroke."
"Remember you know your child better than anyone, you know when something is wrong. I love you @xgeorgiabrightx my little fighter," she concluded.
Georgia responded: "I wouldn't have been able to get through these last 2 weeks without you. My complete rock. I couldn't possibly love you anymore," alongside a red heart emoji.
Debbie later took to her Instagram Stories to share more symptoms which include a temperature, 'violent' shivering, cold hand and feet as well as numbness."
"I would like to thank the NHS for saving my daughter's life. But doctors... Nurses and consultants, please listen to the mums... dads and careers. We know them the best. I felt I had to scream to get listened to," Debbie added.
The NHS website states that sepsis develops when "chemicals that the immune system releases into the bloodstream to fight an infection, cause inflammation throughout the whole body."