Trump is a narcissistic personalty disorder and antisocial personality disorder.
He is also a long time drug addict and now has dementia.
Please note there is no official diagnosis for "malignant narcissist."
I used the term psychopath to drive home the point to lay people that Trump
is quite dangerous and will do whatever it takes to get what he wants.
He is a textbook sociopath:
Antisocial personality disorder, sometimes called sociopathy, is a mental health condition in which a person consistently shows no regard for right and wrong and ignores the rights and feelings of others. People with antisocial personality disorder tend to purposely make others angry or upset and manipulate or treat others harshly or with cruel indifference. They lack remorse or do not regret their behavior.
People with antisocial personality disorder often violate the law, becoming criminals. They may lie, behave violently or impulsively, and have problems with drug and alcohol use. They have difficulty consistently meeting responsibilities related to family, work or school.
Symptoms of antisocial personality disorder include repeatedly:
Ignoring right and wrong.
Telling lies to take advantage of others.
Not being sensitive to or respectful of others.
Using charm or wit to manipulate others for personal gain or pleasure.
Having a sense of superiority and being extremely opinionated.
Having problems with the law, including criminal behavior.
Being hostile, aggressive, violent or threatening to others.
Feeling no guilt about harming others.
Doing dangerous things with no regard for the safety of self or others.
Being irresponsible and failing to fulfill work or financial responsibilities.
https://www.mayoclinic.org/diseases-conditions/antisocial-personality-disorder/symptoms-causes/syc-20353928#:~:text=Antisocial%20personality%20disorder%2C%20sometimes%20called,rights%20and%20feelings%20of%20others.