SMALL-BOWEL DIARRHEA
WHAT THIS SYMPTOM USUALLY MEANS
Small-bowel diarrhea is typically larger volume, more watery, often with weight loss or vomiting. It indicates disease in the small intestine, pancreas, or GI absorption pathways.
MOST COMMON CAUSES
MILD CAUSES
• Sudden food change
• Dietary intolerance
MEDICAL CAUSES THAT NEED DIAGNOSIS
• IBD (small-bowel type)
• EPI (pancreatic insufficiency)
• Parasites
• Food allergy
• Dysbiosis
• Hyperthyroidism (cats)
EMERGENCY CAUSES
• Profuse watery diarrhea
• Severe dehydration
• Bloody diarrhea
• Weight loss + vomiting
RED FLAGS: WHEN THIS IS AN EMERGENCY
• High-volume diarrhea
• Diarrhea + vomiting
• Black/tarry stool
• Rapid weight loss
• Extreme lethargy
AT-HOME CARE YOU CAN START NOW
• Bland diet
• Ensure hydration
• Probiotic
• Slow diet transition
WHAT A VETERINARIAN WILL CHECK
• Fecal testing
• Bloodwork
• Pancreatic enzyme tests (TLI)
• Ultrasound
• Diet allergy trial
MOST LIKELY DIAGNOSES
• IBD
• EPI
• Parasites
• Food allergy
• Dysbiosis
BREEDS OR AGES AT HIGHER RISK
• German Shepherds (EPI)
• Senior pets
• Cats >10 (hyperthyroidism)
WHEN YOU SHOULD SCHEDULE A VETERINARY VISIT
• Within 24 hours
• Immediately if severe dehydration
EXPECTED RECOVERY TIME
• Mild cases: 24–72 hours
• IBD/EPI: long-term management
HOW THIS SYMPTOM RELATES TO LONGEVITY
Small-bowel disease leads to malabsorption, chronic inflammation, and weight loss — major longevity threats.
WHEN TO CONSIDER A LONGEVITY CONSULT
• Weight loss
• Chronic diarrhea
• Senior pets