David Cameron was treated for an ear infection after surfing on his summer holiday in Portugal's Algarve.
The Prime Minister suffered from a condition called otitis, which is also known as 'swimmer's ear'.
According to the NHS, the condition caused inflammation of the external ear canal.
It is often referred to as 'swimmer's ear' because repeated exposure to water can make the ear canal more vulnerable to inflammation.
The BBC reports that Downing Street said Mr Cameron has recovered and is enjoying the rest of his summer holiday with his family.
It's not the first time David Cameron has suffered an injury on holiday.
Last year, he was stung by a jellyfish while in the sea in Lanzarote.
The Huffington Post reported that tourists described him running from the water in his blue swimming trunks, rubbing his arm and shouting: "Ouch! Ouch! Ouch!"
The PM was said to have ignored warnings after locals spotted a number of the stinging marine animals at the island's Arrieta beach.
One local said Cameron got his children out of the waves after someone shouted a warning – but then he immediately went back in.
He joked to the Mirror: "There would have been no shortage of volunteers to administer the treatment if he'd needed it. We were all having a laugh about it in the bar."
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