EA won't touch the topic because everyone is divided, also because it would just mean more work for them, so unfortunately, it's best just to google Sims 4 disability mods, and keep the want of disabled sims to yourself. Because, like cars, we'll never see it in The Sims 4 ...
Sim with Down syndrome will have their own specific Traits. Player will be able to choose 1 trait for sims Personality once Their sim gives birth. Sim with DS will have special traits that will cause certain skills to be easier to learn depending on the 1 trait player chooses. That skill ...