The incident occurred this weekend at the starting ceremony of the annual Brussels 20km run, sponsored by the European Commission, the European Parliament and the Council of the European Union.
Photographs of Michel wincing in pain started circulating in social media, with many users initially laughing at the episode, until they found out the prime minister could have been seriously injured.
HILARIOUS: face of our prime minister Charles Michel when princess Astrid launches 20km of Brussels. #vrtnieuws pic.twitter.com/vboaz0n13A
— Sandra Cardoen (@SandraCardoen) 28 мая 2017 г.
Michel had undergone emergency medical treatment for partial deafness and was forced to clear his schedule on Tuesday, including his presentation of a national investment plan to the Parliament.
"The prime minister must follow a number of treatments within 48 hours after the incident," his spokesman told reporters.
The incident came just days after the Belgian government played host to US President Donald Trump ahead of his first meeting with EU and NATO leaders.
Belgian paper Le Soir reported that Trump complemented the Belgian chocolates presented to him as a gift, while complaining about the difficulties he experienced as he tried building golf courses in Europe.