If you're an adult, see your doctor if:

• Your diarrhea persists beyond two days with no improvement.
• You become dehydrated.
• You have severe abdominal or rectal pain.
• You have bloody or black stools.

Potential causes of diarrhea include:

• viral infections including rotavirus, norovirus, and viral gastroenteritis
• bacterial infections, including Salmonella and E. coli
• parasitic infections

The following diet tips may help with diarrhea:

• sipping on clear liquids, such as electrolyte drinks, water, or fruit juice without added sugar
• after each loose stool, replacing lost fluids with at least 1 cup of liquid