Who are some famous people in history who had retrospective diagnosis for their illnesses

Several medical journal articles have speculated that Samuel Johnson probably suffered from Tourette syndrome and some interrelated form of OCD. His contemporary and biographer James Boswell and others noted that had a number of tics, gesticulations and utterances he frequently engaged in:

He also engaged in certain obsessive-compulsive behaviors and rituals, like touching things in certain orders and doing ritual movements in doorways:

Possible. Though don’t make that out as I think his mother was doing dance hall turns and tricking on the side, it is generally more likely that her husband screwed around at some time and passed the disease on to her, which was known to happen with deplorable frequency [thank Ghu for antibiotics!]

That is very interesting indeed, considering how ‘off track’ he was from his peers in the way of expected social milestones.

Frankly, this is more a matter of a new name for an old, long recognized disease (and one whose causes are still not very well understood) rather than a new diagnosis.

Also, unless it is also documented that Lewis experienced manic episodes as well as ones of melancholy, he did not suffer from bipolar disorder, just bouts of depression.

FWIW, it was probably a cat that gave rabies to Poe (if he, indeed, had it).

Morrell was a general practitioner who had had training as an Ob/Gyn. As far as I know, none of Hitler’s doctors was a dermatologist. Werner Haase was a surgeon, and Karl Brandt, who was Hitler’s personal physician until he took over first the euthanasia program and then the medical experimentation on camp inhabitants, was a surgeon specializing in head and neck injuries.