Final Human Case Week #5 (2025): 42-Year-Old Male With Acute
Diarrhea – Complete Outpatient Clinic Case With Labs, Full HPI,
Diagnostics, Differential Diagnosis, Management Plan & Grading-
Rubric Alignment
Simulated i-Human–Style Case
Chief Complaint: Diarrhea
Patient Profile
• Age: 42 years
• Sex: Male
• Height: 5’10’’ (178 cm)
• Weight: 180 lb (81.6 kg)
• Location: Outpatient clinic with lab capability
,History of Present Illness (HPI)
The patient is a 42-year-old male presenting with 3 days of diarrhea.
He reports 6–8 loose, watery bowel movements per day, non-
bloody, associated with abdominal cramping and mild nausea. No
vomiting. He notes subjective fever and chills on day one but did not
measure temperature. Symptoms began after eating food from a
roadside restaurant while traveling.
He reports increased urgency but no incontinence. Denies melena,
hematochezia, or mucus. No recent antibiotic use. He has been able
to tolerate oral fluids but feels mildly weak.
Past Medical History
• No chronic medical conditions
• No prior GI disease
Surgical History
• Appendectomy at age 20
Medications
• None
Allergies
• No known drug allergies
Social History
, • Works as a delivery driver
• Recent domestic travel
• No tobacco use
• Occasional alcohol
• No illicit drugs
Family History
• No inflammatory bowel disease
• No colon cancer
Review of Systems (Pertinent)
• GI: Diarrhea, cramping
• Constitutional: Fatigue, chills
• GU: No dysuria
• Skin: No rash
Physical Examination
Vitals:
• Temp: 99.8°F (37.7°C)
• HR: 96 bpm
• BP: 118/74 mmHg
• RR: 16
• SpO₂: 98% RA
General: Mildly ill-appearing but alert
Abdomen: Soft, mildly tender in lower quadrants, no guarding or
Diarrhea – Complete Outpatient Clinic Case With Labs, Full HPI,
Diagnostics, Differential Diagnosis, Management Plan & Grading-
Rubric Alignment
Simulated i-Human–Style Case
Chief Complaint: Diarrhea
Patient Profile
• Age: 42 years
• Sex: Male
• Height: 5’10’’ (178 cm)
• Weight: 180 lb (81.6 kg)
• Location: Outpatient clinic with lab capability
,History of Present Illness (HPI)
The patient is a 42-year-old male presenting with 3 days of diarrhea.
He reports 6–8 loose, watery bowel movements per day, non-
bloody, associated with abdominal cramping and mild nausea. No
vomiting. He notes subjective fever and chills on day one but did not
measure temperature. Symptoms began after eating food from a
roadside restaurant while traveling.
He reports increased urgency but no incontinence. Denies melena,
hematochezia, or mucus. No recent antibiotic use. He has been able
to tolerate oral fluids but feels mildly weak.
Past Medical History
• No chronic medical conditions
• No prior GI disease
Surgical History
• Appendectomy at age 20
Medications
• None
Allergies
• No known drug allergies
Social History
, • Works as a delivery driver
• Recent domestic travel
• No tobacco use
• Occasional alcohol
• No illicit drugs
Family History
• No inflammatory bowel disease
• No colon cancer
Review of Systems (Pertinent)
• GI: Diarrhea, cramping
• Constitutional: Fatigue, chills
• GU: No dysuria
• Skin: No rash
Physical Examination
Vitals:
• Temp: 99.8°F (37.7°C)
• HR: 96 bpm
• BP: 118/74 mmHg
• RR: 16
• SpO₂: 98% RA
General: Mildly ill-appearing but alert
Abdomen: Soft, mildly tender in lower quadrants, no guarding or
