The Unquiet Skull

In the remainder of his life, however, Nietzsche seems to have caught an early dose of syphilis, very probably during his first-ever sexual encounter, which gave him crushing migraine headaches and attacks of blindness and metastasized into dementia and paralysis. This, while it did not kill him right away, certainly contributed to his death and cannot possibly, in the meanwhile, be said to have made him stronger.