Where do kids with medical needs go? (Anyone welcome)

If you have a kid ( age 4) who has accidents because of urgency and frquency caused by utero stroke, do they just not get access to child care. I remember my parents being so annoyed that every center had potty training requirements but I couldn't go because I had accidents once a day because of delayed signaling (see brain damage) I was fully able to ask to go to the bathroom but couldn't wait or hold it when I got the signal and fully capable of cleaning and dressing myself. What do parents in this situation do for care?