That's the least of his problems. Ethics problems prevent the psychiatry assn from directly saying Trump is insane.
In a letter to President Obama in December (reported in the Huffington Post), three psychiatry professors asked for a ‘medical and neuropsychiatric’ evaluation of the then president-elect. This was followed by a welter of similar concerns including: a letter to the New York Times signed by 35 psychiatrists, psychologists and social workers; a petition on Change.org signed by more than 57,000 mental health professionals, and even a congressional proposal to have a White House psychiatrist.
The main diagnosis mentioned is ‘Narcissistic Personality Disorder’ from the DSM, the main manual of psychiatric classification in the US.
https://blogs.canterbury.ac.uk/discursive/saying-donald-trump-is-mentally-ill-is-unethical-inaccurate-and-unhelpful/