What history questions should I ask a patient who has had vomiting and diarrhea for three days?

History Questions for Vomiting and Diarrhea × 3 Days

For a patient presenting with 3 days of vomiting and diarrhea, you must systematically assess clinical features, volume depletion status, and epidemiological risk factors to determine severity and guide management. 1

Clinical Symptom Characterization

Onset and Progression

• When and how did symptoms begin? (abrupt vs. gradual onset) 1
• Which came first—vomiting or diarrhea?
• Duration of each symptom separately

Stool Characteristics (Critical for Classification)

• Frequency: How many bowel movements per day? 1
• Volume: Small frequent amounts vs. large volume? 1
• Appearance: Watery, bloody, mucoid, purulent, or greasy? 1
• Blood in stool? (visible blood or dark/tarry stools) 1

Vomiting Details

• Frequency and volume 1
• Character: Bilious, bloody, or food content? 2, 3
• Relationship to oral intake: Can they keep anything down?

Dysenteric Symptoms (Inflammatory Pattern)

• Fever? (temperature if measured) 1
• Tenesmus (painful straining with bowel movements) 1
• Abdominal pain/cramping: Location, severity, constant vs. intermittent 1

Volume Depletion Assessment (Life-Threatening)

Ask specifically about:

• Thirst (increased or excessive) 1
• Urination: Decreased frequency, dark urine, or no urination 1
• Dizziness when standing (orthostasis) 1
• Lethargy or confusion 1
• Dry mouth 1

Epidemiological Risk Factors (Essential for Diagnosis)

Exposures

1. Recent travel to developing areas? 1
2. Unsafe food consumption: Raw/undercooked meat, eggs, shellfish, unpasteurized milk or juices 1
3. Untreated water exposure: Swimming in or drinking from lakes/streams 1
4. Animal contact: Farm visits, petting zoos, reptiles, or pets with diarrhea 1

Social/Occupational

1. Other ill contacts? (household, workplace, social gatherings) 1
2. Daycare attendance or employment? 1
3. Food handler or caregiver occupation? 1
4. Recent hospitalization? (within past 3 months)

Sexual History (When Appropriate)

1. Receptive anal intercourse or oral-anal contact? 1

Medication and Medical History

Current/Recent Medications

• Antibiotics (within past 2 months—raises C. difficile concern) 1
• Antacids or proton pump inhibitors 1
• Anti-motility agents (loperamide, diphenoxylate) 1
• Chemotherapy or immunosuppressive drugs 4, 5

Underlying Conditions

• Immunocompromise: HIV/AIDS, transplant, chronic steroids 1
• Prior gastrectomy 1
• Age extremes: Very young or elderly 1
• Diabetes, thyroid disease, or inflammatory bowel disease 6

Associated Symptoms

• Headache, myalgias (systemic infection indicators) 1
• Altered mental status 1
• Weight loss (if chronic component)

Common Pitfalls to Avoid

Do not assume viral gastroenteritis without ruling out:

• Bacterial causes requiring antibiotics (bloody diarrhea with fever suggests Shigella, Campylobacter, or Salmonella) 1
• C. difficile in anyone with recent antibiotic use 1
• Severe dehydration requiring IV fluids (orthostatic symptoms, decreased urination, tachycardia despite fluids) 1, 7

Red flags requiring immediate hospitalization:

• Signs of severe dehydration or shock 1, 7
• Bloody diarrhea with fever 1
• Altered mental status 1
• Immunocompromised state with persistent symptoms 1