I-HUMAN CASE STUDY DAN JONES – A 42-YEAR-OLD
MALE WITH ACUTE FOODBORNE GASTROENTERITIS
AND DEHYDRATION COMPREHENSIVE ASSESSMENT,
DIFFERENTIAL DIAGNOSIS, AND EVIDENCE-BASED
MANAGEMENT (2026-2027)
Dan Jones is a 42-year-old male who presents with a 3–5-day history of acute,
watery diarrhea (6–8 stools per day) following consumption of food from a
roadside restaurant during a recent business trip, accompanied by mild abdominal
cramping, nausea, and orthostatic lightheadedness without vomiting or high
fever. His physical exam reveals mild tachycardia, orthostatic hypotension, dry
mucous membranes, and hyperactive bowel sounds with diffuse lower abdominal
,tenderness, consistent with mild-to-moderate dehydration secondary to acute
infectious gastroenteritis.** The treatment plan focuses on oral rehydration,
symptomatic relief with loperamide (given the absence of fever or bloody stools),
dietary modification, and selective stool studies to identify the causative
pathogen, with return precautions for worsening symptoms such as high fever,
bloody diarrhea, or inability to maintain oral hydration.
Part 1: Patient Bio Data & Initial Data Gathering
Category Details
Name Dan Jones (i-Human Virtual Patient)
Age 42 years old
Gender Male
Height 5'10" (178 cm)
Weight 180 lb (81.8 kg)
BMI 25.8 – Overweight range
Occupation Sales representative / Landscaper (varies by case version)
Setting Outpatient primary care clinic with laboratory capabilities
Source Patient (self)
Reliability Reliable historian
Allergies No Known Drug Allergies (NKDA)
, Chief Complaint: "I've had nonstop diarrhea for the last three days." or "I've had frequent
loose stools for several days."
Reason for Encounter: Acute-onset diarrhea with associated abdominal cramping and
mild dehydration symptoms following a potential foodborne exposure .
Part 2: Past Medical History (PMH)
Condition Details
Hypertension Well-controlled on medication
Borderline Hyperlipidemia History noted in some case versions
No chronic GI disease No IBD, IBS, or chronic diarrhea history
No immunocompromising conditions None reported
No prior abdominal surgeries Except appendectomy in some versions
Key Points:
Generally healthy with well-controlled hypertension
No prior similar episodes of diarrhea
No history of inflammatory bowel disease or colon cancer
No chronic renal disease or heart failure
Part 3: Past Surgical History (PSH)
Surgery Details
Appendectomy Age 18–19 (noted in some versions)
, Surgery Details
Other surgeries None reported
Part 4: Medications
Current Medications
Medication Dose Frequency Prescriber Purpose
Once
Amlodipine 5 mg PCP Hypertension
daily
Occasional 400 Back pain (last used 4
PRN Self
Ibuprofen mg days ago)
Medication Adherence
Takes amlodipine daily as prescribed
No chronic prescription meds reported aside from antihypertensive
Recent/New Medications
No new antibiotics
No recent medication changes
OTC Bismuth (Kaopectate/Pepto-Bismol) tried with no relief
Part 5: Family History
MALE WITH ACUTE FOODBORNE GASTROENTERITIS
AND DEHYDRATION COMPREHENSIVE ASSESSMENT,
DIFFERENTIAL DIAGNOSIS, AND EVIDENCE-BASED
MANAGEMENT (2026-2027)
Dan Jones is a 42-year-old male who presents with a 3–5-day history of acute,
watery diarrhea (6–8 stools per day) following consumption of food from a
roadside restaurant during a recent business trip, accompanied by mild abdominal
cramping, nausea, and orthostatic lightheadedness without vomiting or high
fever. His physical exam reveals mild tachycardia, orthostatic hypotension, dry
mucous membranes, and hyperactive bowel sounds with diffuse lower abdominal
,tenderness, consistent with mild-to-moderate dehydration secondary to acute
infectious gastroenteritis.** The treatment plan focuses on oral rehydration,
symptomatic relief with loperamide (given the absence of fever or bloody stools),
dietary modification, and selective stool studies to identify the causative
pathogen, with return precautions for worsening symptoms such as high fever,
bloody diarrhea, or inability to maintain oral hydration.
Part 1: Patient Bio Data & Initial Data Gathering
Category Details
Name Dan Jones (i-Human Virtual Patient)
Age 42 years old
Gender Male
Height 5'10" (178 cm)
Weight 180 lb (81.8 kg)
BMI 25.8 – Overweight range
Occupation Sales representative / Landscaper (varies by case version)
Setting Outpatient primary care clinic with laboratory capabilities
Source Patient (self)
Reliability Reliable historian
Allergies No Known Drug Allergies (NKDA)
, Chief Complaint: "I've had nonstop diarrhea for the last three days." or "I've had frequent
loose stools for several days."
Reason for Encounter: Acute-onset diarrhea with associated abdominal cramping and
mild dehydration symptoms following a potential foodborne exposure .
Part 2: Past Medical History (PMH)
Condition Details
Hypertension Well-controlled on medication
Borderline Hyperlipidemia History noted in some case versions
No chronic GI disease No IBD, IBS, or chronic diarrhea history
No immunocompromising conditions None reported
No prior abdominal surgeries Except appendectomy in some versions
Key Points:
Generally healthy with well-controlled hypertension
No prior similar episodes of diarrhea
No history of inflammatory bowel disease or colon cancer
No chronic renal disease or heart failure
Part 3: Past Surgical History (PSH)
Surgery Details
Appendectomy Age 18–19 (noted in some versions)
, Surgery Details
Other surgeries None reported
Part 4: Medications
Current Medications
Medication Dose Frequency Prescriber Purpose
Once
Amlodipine 5 mg PCP Hypertension
daily
Occasional 400 Back pain (last used 4
PRN Self
Ibuprofen mg days ago)
Medication Adherence
Takes amlodipine daily as prescribed
No chronic prescription meds reported aside from antihypertensive
Recent/New Medications
No new antibiotics
No recent medication changes
OTC Bismuth (Kaopectate/Pepto-Bismol) tried with no relief
Part 5: Family History
