President Donald Trump's recent rallies and public events in South Carolina, Washington DC and at the White House have raised fresh questions about his health, after psychologist Dr John Garrison claimed Trump is showing signs of 'significant decline' including slurred speech, memory lapses and what he describes as 'involuntary arm spasms'.
Concerns about the president's physical and cognitive fitness have simmered for years, but Garrison, a psychologist whose video analyses of Trump's behaviour have gained wide circulation online, argues that what he is seeing now looks markedly different from earlier quirks.