What should not be given to a diarrhea patient?

Patients with diarrhea should avoid dairy products, as they can exacerbate symptoms due to lactose intolerance. Fatty, greasy, or spicy foods can also irritate the digestive system and worsen diarrhea. Additionally, caffeine and alcohol should be avoided, as they can lead to dehydration and further intestinal irritation. It's best to stick to bland, easily digestible foods and stay hydrated with clear fluids.