Khansaheb Group firm supports Art Connects Women
Responding to queries on the subject, spokesman Hogan Gidley said simply: "No."
"He's sharp as a tack," Gidley told reporters on board Air Force One.
Trump, 71, will be examined at the Walter Reed military hospital in a Washington suburb on Friday and the results are set to be made public.
During the 2016 presidential campaign, Trump published a letter by his long term doctor Harold Bornstein that stated he was in "excellent physical health".
Bornstein had previously written about Trump's health in glowing terms, stating in 2015 he would be "the healthiest individual ever elected to the presidency".
Angered by the publication of a bombshell book that raised doubts over his mental faculties, Trump took to Twitter this weekend to describe himself as "a very stable genius" and "like, really smart".
Khansaheb Group firm supports Art Connects Women
Al Ekhbariya said Al Ittihad's chairman and vice chairman were in Madrid to hammer out a 'record deal' with Benzema
The first Manchester derby FA Cup Final saw City captain Ilkay Gundogan score twice to seal a 2-1 victory against Manchester United
Police said the accident occurred due to non-compliance with safety requirements
Country's GDP forecast to grow by 4.2% this year
Disruptions caused by ships breaking down or running aground are common in the waterway, through which about 10% of global maritime trade passes
The French forward has been linked with a move to Saudi Arabia
The death toll from Friday's crash near Balasore in Odisha is expected to climb above 288