Bill Clinton's appearance at a glitzy New York City gala has sparked fresh concern for his well-being on the back of worrying health setbacks.

Bill Clinton has sparked fresh health fears courtesy of his disheveled appearance and communication struggles at a glitzy New York City Gala.

RadarOnline.com can reveal the former president, 79, wore a Band-Aid on his nose and visibly shook as he turned pages of his speech, which featured at least one uncomfortably-long pause during The Headstrong Project's Annual Gala on Wednesday, October 22.

Onlookers claim the former president's slow speech was noticed by all.

It is unclear why Clinton was sporting the Band-Aid, although he has previously been treated for a pre-cancerous lesion on the same body part.

According to onlookers, Clinton spoke in a low, halting voice as he handed out an award to former Navy SEAL Frank Larkin, who was part of his own security detail.

A guest at the bash told The Daily Mail, "It was a bit sad to watch. The room went dead silent when he spoke because he had a low voice and was speaking slowly, so everyone wanted to hear what he had to say.

"He was admirable, and everyone stood up for him to clap before and after his speech."

Clinton, pictured here earlier this year, wore an unexplained Band-Aid on his nose.

Before presenting the Moral Courage Award to Larkin, Clinton spoke about how he and his former security detail used to run "25 miles a week."