He will be examined at the Walter Reed National Military Medical Center on the edge of Washington DC, the country's largest military hospital, by the same doctor who examined his predecessor Barack Obama.
The physical test will last around two hours and include blood and urine tests, heart checks and even questions about his sleeping habits and sex life. A summary of the results will be made public. The controversy over his mental heath resurfaced after a new book by journalist Michael Wolff claimed Trump was failing to recognise old friends and often repeated stories "word-for-word".