In Forrest Gump, what disease did Jenny have?

Let me get this straight. We just had the most severe mass shooting in U.S. history, Trump is still President. Texas, Florida and Puerto Rico have massive hurricane damage and the best thing we have to talk about are insults to fictional characters? Let’s talk about nigger Jim from Huckleberry Finn while we are at it. Jesus Christ on a stick, these types of things are what people are referring to when they talk about PC culture gone bad.

I love the movie Forrest Gump but it has no relevance to anything in real life. He is just a retard that just happens to fall into every available opportunity by chance. The reason he was disabled is never given but I assume it was some kind of delivery complication rather than genetic. The whole point of the story isn’t about him. It is just a vehicle to showcase American history.