I've recently started to tell my friends about my Aphantasia and how it affects me. Aphantasia is the inability to see mental images. One of the immediate reactions I keep getting is "How do you play d&d?". Something that helps me immensely when playing is showing or revealing maps or any props before verbally describing it. I can only catalog the details so quick. 

My question to the community is who else plays with Aphantasia and what struggles do you have? What do you do to help make the game better?

https://aphantasia.com/

I also have a level of Aphantasia and boy does it make theatre of mind a struggle.

Before knowing about Aphantasia, I was involved in an online DnD game that wasn't using any sort of Virtual Tabletop, this made combat for me headache-inducing and painful, especially as I was playing a wizard who really needs to understand the positioning of everyone on the battlefield.

I am now involved in 3 games, all played in person and thankfully all use maps for at least battle (and one has exploration maps in use at all times) and this helps me out so much. I find that when the DM is explaining the layout of a room, or the direction in a city I end up tuning out a bit and relying on my party members to keep track of it. Not really ideal but thankfully they are all much better at directions!

As a player, I can't say there is anything I do 'to help', I am at the mercy of my DM's a bit, but I have learned that if I were to try an Online Campaign again, I would need it to run on a virtual tabletop or I know it just won't work for me.

I do not have aphantasia but I do have issues with auditory memory. I have a lot of trouble remembering things if there is no visual component - so I have trouble following along with stuff like audio books, podcasts, etc. This makes TotM difficult for me as well, at least if it is spoken rather than in text.

When I'm DMing, I often collect a bunch of images for my session - places, NPCs, items, monsters - and connecting the action to those images helps a lot, and sometimes the images I find inspire me to change things around or go in new directions, which is fun. If I'm a PC, sometimes I'll do some image searches if I have a screen handy. Also if I jot down the sensory stuff included in DM descriptions of things it helps to bypass the issue. But my group tends to enjoy maps and miniatures and props and stuff so I am lucky enough to not have to worry about it much.