During the contentious G7 Summit, observers were both fascinated and perplexed by the condition of US President Donald Trump’s hands, raising questions about his health.

When the 79-year-old Trump departed the Kananaskis, Canada, conference early, he ignited a torrent of rumours.

Online users expressed concern that the president’s early departure might have been related to his health, even though he left as the Israeli-Iranian conflict worsened.

The way his hands looked at Kananaskis seemed to be their proof.

Trump had a noticeable discolouration on his hand in pictures shot at the occasion, and other pictures showed what looked to be foundation applied to hide it.

He had a puffy-looking hand, too.

One person said in response to a photo of the Republican’s hands, “What’s up with Trump’s hands???” 

Another said, “Holy crap. That is some major [oedema] in Trump’s right hand. Compare it to the left side.” 

The reason of the discolouration has long been a subject of conjecture.

It was bruises from Trump shaking hundreds of hands on the campaign trail and with his present responsibilities, a White House official told MailOnline earlier this year. Those frequent encounters can wear you out.

According to the official, Trump tries to greet as many individuals as he can. Its appearance in October, at the height of Trump’s campaign to retake the White House, is explained by this.

However, some claim that it resembles a bruise from an intravenous operation.

Without offering proof, others questioned whether Trump, who took the oath of office in January as the oldest president, was being “dehydrated and given fluids” or perhaps suffering from a vitamin shortage.

Dr Jeff Foster, a men’s health specialist and the Medical Director of Manual, said, “It appears this bruise in question is reoccurring, having seen a similar bruise in August and November of last year, the most likely thought is this could well be bruising from a recent canula from the way it appears.” 

“Of course as Donald Trump is nearly 80 years old, his skin is naturally thinner and weaker which happens as we age and therefore we bruise much more easily.”

“The White House representatives have suggested Donald’s bruise is from constantly shaking hands with people, however I would be concerned if this was indeed the case of blood thinning drugs or skin delicacy.”

Dr Ross Perry, the Medical Director of Cosmedics skin clinics, said, “There has been much speculation of Donald Trump’s declining health in recent month, and at 78 it is entirely natural that our skin bruises far quicker and easier when we are almost 80.” 

“This is due to the skin becoming less flexible and thinner as it loses the fatty layer which cushions the blood vessels.”

“As Donald is a fan of tanning, exposure to the sun can also damage the skin making blood vessels easier to break.”

“He may also be taking medication such as anticoagulants or corticosteroids which can also can increase the risk of bruising.”

“When we age, a simple knock which may even be unnoticeable can result in a bruise, the same could be said for a over strong handshake.”

“In his case, I’d say far likely that it is a pure coincidence he’s had a simple knock on perhaps a car door, or a simple bang and purely just age related on the skin.”