Denise asks why no one in her family will ever tell her how her grandfather died. finally, she learns that he died from a sexually transmitted disease that led to paralysis, psychosis, and blindness. most likely, he died from:

He died from "syphilis".

The primary indication of syphilis is a little, effortless sore. It can show up on the sexual organs, rectum, or inside the mouth. This sore is known as a chancre. Individuals frequently neglect to see it immediately. 
Syphilis can be trying to analyze. Somebody can have it without demonstrating any side effects for a considerable length of time. Notwithstanding, the prior syphilis is found, the better. Syphilis that remaining parts untreated for quite a while can make real harm vital organs, similar to the heart and cerebrum.

Iam not sure sorry