Ammon News - The 24-year-old hasn't dined on a meal in her adult life, and has now spoken out about her heartbreaking symptoms that led to a terminal diagnosis at just 22 years old, according to Mirror newspaper.

Giving a timeline of how her short life has gone so far, the Australian explained: “At just age 12 I started getting sick not thinking much of it. By age 15 it was getting worse I had been back and forth to doctors with numerous issues.

"By age 16 my life started to change forever. By age 18 I was given a diagnosis. By age 22 I became terminal."

Annie gets her food through IV nutrition, which according to the University of California's Medical School, is the administration of nutrients directly into the bloodstream through a vein - and is used to deliver a high concentration of nutrients that the body needs to function properly.

“When I was a teen, I started struggling with dizziness, fainting spells and digestive issues,” Annie, of Adelaide, shared.

“Doctors couldn’t figure out what was wrong with me until eventually a urine and blood test confirmed I had Autoimmune Autonomic Gangliopathy (AAG).”

The disease is chronic and causes her immune system to attack healthy nerve cells, but in Annie's condition it has worsened over the years and has meant medics have had to remove more than 10 feet of her bowel, leading her to develop 'intestinal failure'.