(CNN) President Donald Trump said he does not consider potential brain injuries to be as serious as physical combat wounds, downplaying the severity of US service members being treated for concussion symptoms from an Iranian attack as "headaches."

During the World Economic Forum in Davos, Switzerland, Trump was asked to explain the discrepancy between his previous comments that no US service member was harmed in the January 8 Iranian missile attack on Al-Asad airbase in Iraq, and the latest reports of US troops being treated for injuries sustained in that attack.

"No, I heard that they had headaches, and a couple of other things, but I would say, and I can report, it's not very serious," Trump replied during the news conference.

The reporter pressed, "So you don't consider potential traumatic brain injury serious?"

"They told me about it numerous days later, you'd have to ask Department of Defense," Trump replied.

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