The TOWIE star was originally rushed into hospital while appearing in Celebrity Big Brother, and has been undergoing a series of blood tests and scans to work out what was wrong.
Speaking out about her diagnosis, Sam says she also lost 1st 7lb in weight since falling ill and has been suffering from a loss of appetite, extreme stomach cramps and ulcers.
'It was awful to have it in the Big Brother house,' she said in an interview for This Morning. 'For nearly a month I couldn't hold any food or drink down.'
"I was in the shower and noticed that the weight was just falling off me," she added.
"It also affected my skin. It sounds really gross but I had huge boils which burst in front of Louisa. I couldn't believe it was happening on Big Brother!"
So what is Crohn's Disease?
According to the NHS, Crohn's is a 'long-term condition which causes an inflammation of the lining of the digestive system,' which usually affects the intestine.
It's symptoms can cause all kinds of stomach troubles from cramps, weight loss, pain and diarrhoea.
How do you get Crohn's Disease?
It is thought any number of factors are responsible from genetics, a problem with the immune system and even environmental factors.
It's not that common a condition and can affect anyone, and is slightly more common in women than men.
How can you treat Crohn's Disease?
There is no cure, but it can be managed usually with a healthy diet and lifestyle, and people with Crohn's can go for periods of time with no symptoms.
Sometimes surgery is necessary to remove an inflamed part of the intestine, and even if people don't need surgery when diagnosed, they may require it at a later stage.
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