To treat diarrhea in the elderly, the following steps can be taken:

1. Stay hydrated: Encourage the person to drink plenty of fluids such as water, clear broths, frozen water or ice pops, or clear soda to replace lost fluids.
2. Eat a bland diet: Encourage the person to eat a bland diet, such as rice, bananas, applesauce, and toast, until the diarrhea subsides.
3. Avoid certain foods: Advise the person to avoid foods that may worsen diarrhea, such as dairy products, spicy foods, fatty foods, and caffeine.
4. Over-the-counter medication: Over-the-counter medication, such as loperamide (Imodium) can be used to slow down diarrhea. However, it’s important to check with a doctor before administering any medication.
5. Consult a doctor: If the diarrhea persists or is accompanied by other symptoms such as dehydration, high fever, or blood in the stool, it’s important to consult a doctor.
6. It’s important to note that elderly people have a higher risk of developing dehydration, so they need to be closely monitored and treated accordingly.