At 79, Donald Trump is the oldest person to ever be inaugurated as U.S. president. Though critics have raised concerns about his age, Trump and his doctors insist he’s still in good health.

In April, the White House released a medical report from Dr. Sean Barbabella, declaring Trump “fully fit” to serve. The exam covered everything from eye and heart scans to a colonoscopy, which found a benign polyp and signs of diverticulitis. Trump takes medications for cholesterol, heart health, and a skin condition.

Still, one detail keeps raising eyebrows — the mysterious bruises and wrinkles on Trump’s right hand. First spotted during his Stormy Daniels trial, the marks have popped up again and again, including before a June appearance at the Kennedy Center.

Some believe it’s nothing — just the result of constant handshaking. “He meets more people than any other president,” said Press Secretary Karoline Leavitt. Trump himself claimed it was from shaking “thousands of hands.”

But doctors suggest other explanations. Dr. Ola Otulana said the marks look like superficial bruises, common in older adults due to thinning skin and fragile vessels. Minor bumps, blood draws, or even certain medications can make bruises more likely.

Then came more online speculation — this time, about a possible catheter. A photo from a UFC event sparked rumors that Trump was wearing one under his suit. Some posts claimed the line in his pants looked like tubing. Others pushed back, saying it was just a crease and dismissing the claims as baseless.

Doctors haven’t raised any red flags, but Trump’s appearance — and health — continue to draw attention as he campaigns for another term.