Here is a drafted History of Present Illness (HPI) based on the ER Assessment Record:

M.D. Razak is a 16-year-old male who presented to the Emergency Department via self/public transport on 01-06-2026 at 11:09 PM with a chief complaint of abdominal pain.

The patient reports a 3-day history of abdominal pain localized to the abdomen with radiation to the right iliac fossa (RIF). The pain has been associated with loose stools (multiple episodes) and bilious, non-projectile vomiting (2-3 episodes per day). He also reports high-grade fever with chills for the past 2 days.

He gives a history of outside food consumption 4 days prior to presentation. There is no history of similar complaints in the past.

On review, the working differential noted at triage includes mesenteric lymphadenitis.

He denies any prior hospitalizations. There is no significant past medical history. No known drug, food, or other allergies. No prior surgical history.

Condition on Arrival: Alert

M.D. Razak, a 16-year-old male, presented to the ER with a 3-day history of abdominal pain radiating to the RIF, associated with loose stools (multiple episodes), bilious non-projectile vomiting (2-3 episodes/day), and high-grade fever with chills for 2 days. He reports outside food consumption 4 days prior. No similar complaints in the past. No significant past medical, surgical, or allergy history.

Working Diagnosis: Acute Gastroenteritis / Mesenteric Lymphadenitis

ECG Findings: Sinus Tachycardia