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Now shocking new claims have emerged after law enforcement witnesses said she suffered a 'medical episode'. Nearly half a million YouTube users have watched a video entitled 'Exclusive report: Hillary Clinton has Parkinson's Disease, doctor confirms'. The video shows Dr. Ted Noel, a medical expert of 30 years, claiming Hillary Clinton is exhibiting classic signs that point to Parkinson's Disease - and has been for 11 years. Clinton's camp have said the 68-year-old has been diagnosed with pneumonia and her planned campaign schedule has been modified following doctor's orders. So is there any truth in the Dr. Noel's claims? Dr Adam Simon, GP and chief medical officer at PushDoctor.co.uk, the UK’s leading GP video consultation service, spoke exclusively to Express.co.uk about the claims.

GETTY Hillary Clinton's health has been under the microscope after a medical episode

While those symptoms are seen in Parkinson's disease, the coughing and throwing up are usually related to much more developed degenerative diseases where people are more poorly Dr Adam Simon, chief medical officer at PushDoctor.co.uk

Discussing the constant coughing fits, nearly throwing up, fainting, and a purported 'freezing event' Hillary suffered, Doctor Simon said: "While those symptoms are seen in Parkinson's disease, the coughing and throwing up are usually related to much more developed degenerative diseases where people are more poorly - often chair or bed bound. "They specifically have difficulty swallowing - they can't swallow food, it might go down the wrong way. Or swallow saliva, that will go down the wrong way. That generates coughing. "I don't think Hillary is showing symptoms of that." The GP explained fainting isn't a regular feature of Parkinson's, but freezing is. Dr Simon said: "Freezing is a common feature of Parkinson's disease." The GP believes Hillary's symptoms are more likely to be due to the stresses and strains of a long campaign, and the vast numbers of people she's been in very close contact with over the recent months.

He added: "A respiratory infection like pneumonia can cause similar symptoms of coughing, fatigue and throwing up."

GETTY Hillary has been caught out by a cough during her speeches

11 facts about Hillary Clinton Thu, July 28, 2016 American politician Hillary Clinton becomes the Democratic Party's nominee for President of the United States. Making her the first woman to run for President this century. To celebrate this milestone, here are 11 facts about Hillary Clinton. Play slideshow REUTERS 1 of 11 Hillary Clinton is the first female nominee of a major US Political Party for the United States presidency

While the official diagnosis from Hillary's doctor is pneumonia, and the presidential candidate is now on antibiotics, Express.co.uk asked whether the symptoms of Parkinson's disease similar to those of pneumonia? Dr Simon explained: "No, they're not - but there is some overlap. "There are three main symptoms of Parkinson's disease. Tremor, rigidity (where, if you're walking along your arms swing by your side but with Parkinson's patients they stay close and don't swing) and slowness of initiating movement. Difficulty getting out of a chair, difficulty turning over in bed or turning around quickly when walking. Those are the three main symptoms of Parkinson's disease." Dr Simon, who is a chief medical officer, explained the symptoms of pneumonia are coughing, temperature, shortness of breath, fever and sometimes vomiting - if you've got a lot of phlegm.

GETTY Dr Adam Simon chief medical officer at PushDoctor.co.uk spoke to Express.co.uk about the claims

When quizzed whether Hillary would be able to do the job of President of the United States if she were to be diagnosed with Parkinson's, Dr Simon said: "Once you've had Parkinson's disease a long time there are symptoms that might cause you long term problems - including memory issues and depression issues. But they are only when you've had it for a long time. "If she had a term of office in America which is four years, I wouldn't expect there would be any restriction on the ability of her to do her job over the next four years if she was diagnosed with Parkinson's disease today." Lisa Bardack, Clinton’s doctor told the world's media yesterday Secretary Clinton has been experiencing "a cough related to allergies" and that she has been diagnosed with pneumonia. The official statement read: "She was put on antibiotics, and advised to rest and modify her schedule. While at this morning's event, she became overheated and dehydrated. I have just examined her and she is now re-hydrated and recovering nicely."

GETTY Hillary looked fine after a couple of hours yesterday