[VanShuyten]

Tertiary syphilis would certainly explain his poor judgment and aberrant behavior.

[elcid1970]

Tertiary syphilis so ravaged the brain of Al Capone that he was released from Alcatraz early, having been deemed no longer a threat to society. He could no longer organize a crime.

Confused, he spent his declining years at his Florida mansion daily casting a fishing line into his swimming pool.