Complex sentence: Second, some people need toilet access urgently, suddenly and without warning: such as those with chronic conditions such as Crohn's disease and colitis, and those temporarily afflicted with food-borne illnesses.
Split into simpler sentences: Second, some people need toilet access urgently, suddenly and without warning. This category includes people with chronic conditions such as Crohn's disease and colitis and those temporarily afflicted with food borne illnesses.