"President Trump has bruises on his hand because he's constantly working and shaking hands all day every day," she said in a follow-up statement.
A large bruise that appeared on Donald Trump's hand is down to him shaking a lot of hands, the White House has said.
On X, one person suggested Mr Trump was on blood thinners, while another said: "Maybe, but elderly people bruise more easily than younger folks.
Mr Trump's right hand seemed bruised during the 78-year-old's meeting with French President Emmanuel Macron on Monday, prompting speculation on social media over his health.
"President Trump is a man of the people and he meets more Americans and shakes their hands on a daily basis than any other president in history.
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