A letter from mental health professionals:

"Trump appears to be showing signs of cognitive decline ... These symptoms include: a dramatic decrease in verbal fluency, tangential thinking, diminished vocabulary, overuse of superlatives and filler words, perseveration, confabulation, phonemic paraphasia, semantic paraphasia, confusing people (not just names), as well as exhibiting deteriorating judgment, impulse control, and motor functioning (including a wide-based gait)."
~ 233 Signatories