Speculation about Angela Merkel's health issues initially began circulating after she was seen trembling at a welcome ceremony for Ukraine’s newly-minted president, Volodymyr Zelenskiy, in Berlin last week.

German Chancellor Angela Merkel appeared shaky again as she attended an official ceremony to appoint a new justice minister in Berlin on Thursday.

Standing alongside President Frank-Walter Steinmeier in Schloss Bellevue, the president's official residence, Angela Merkel was filmed holding her arms across her chest, while her legs appeared to be trembling visibly.

You can see it past the 8:00-minute mark in the video below.

Last Tuesday, Angela Merkel was seen shaking repeatedly as she stood next to Ukrainian President Volodymyr Zelensky during a red-carpet ceremony outside the chancellery, while a military band played their national anthems.

At a press conference that followed, the 64-year-old German leader blamed the shakiness on dehydration.

“I've drunk at least three glasses of water, which I apparently needed, and now I'm doing very well,” she said.

© REUTERS / REUTERS TV German Chancellor Angela Merkel receives water as she was seen shaking meeting President Frank-Walter Steinmeier in Berlin, Germany, June 27, 2019, her second shaking bout within two weeks

Indeed, Germany has been sweltering in a heatwave that swept Europe this month. Temperatures hit 40 degrees Celsius in parts of the country, prompting German authorities to introduce speed restrictions for high-speed motorways and caused wildfires outside Berlin.