Alan Turing was a famous mathematician, logician, cryptanalyst, and computer scientist. He’s considered to be the father of computer science and artificial intelligence, and he helped breaking the german Enigma during WW2, but despite of all this - the man was punished for being gay, and he was giving estrogen injections. All the effects were supposed to disappear when the treatment was stopped, but they didn’t. He was left with gynecomastia and a ruined brain. He couldn’t work anymore, and committed suicide because of it.
Most side effects from Propecia comes from excessive estrogen, and I believe that this man experienced something similar to PFS.