E3.1

Constructing the HPI

The History of Present Illness anchors everything that follows. Build it as a chronological narrative, not a checklist.

Encounter card

Setting

First clinical encounter; updated on each subsequent visit.

Opening move

After eliciting the chief complaint, ask the patient to walk you through how this began. Anchor on a specific time point ("Take me back to when you first felt different"). Build the narrative chronologically, then add specifics.

Sample language

"Take me back to when this all started — what was the first thing you noticed?"
"And then what happened? Walk me through the next few weeks."
"How is right now different from a year ago, when you were doing okay?"
"What's changed in the last 2 weeks specifically?"

Listen for

Chronology, precipitants, course (worsening/stable/fluctuating), prior episodes and their course, triggers, alleviating factors, impact on function (work, relationships, sleep, appetite, hobbies).

Common pitfalls

Asking diagnostic-criteria checklist questions before the narrative. Letting the HPI drift into life history without anchoring on the current episode. Missing the precipitant by not asking explicitly.

Red flags / escalate: Acute change with no clear precipitant (consider medical contributors, substance use). Worsening trajectory with safety concerns. Patient cannot recall recent events (cognitive change).

Documentation

Chronological narrative form: "Patient describes onset 4 weeks ago after job loss. Initially sleep disturbance, then progressive anhedonia and low mood. Over the last 10 days has been unable to work."

Real-world reality: Involuntary hold paperwork varies by state but always requires specific physician certification, time-limited orders, and patient rights notification. Know your state's forms and process.

A good HPI tells the next reader the story of the illness in 6-8 sentences.

Warm grey-tinted clinical notebook page, sienna accent. The HPI as chronological narrative — onset → course → current state — anchored on specific dates and triggers. Margin clusters on the narrative spine.

The HPI — history of present illness — is the spine of every psychiatric encounter. Done well, it tells the next reader the story of this episode in a few clean sentences. Done poorly, it produces a checklist of symptoms without the chronology or context that make diagnosis possible.

Build the narrative chronologically. Anchor on a specific time point: "Take me back to when you first noticed something different." Then move forward through the development of the current episode. Onset, course, precipitants, what helped, what didn't, impact on daily life. The story should have a beginning, middle, and present — not just a list of current symptoms.

Differentiate the current episode from longitudinal pattern. The patient who says "I've been depressed for years" is describing a long arc. The HPI focuses on the current episode — what's different now, what changed recently, why they're here today. The longitudinal pattern goes under past psychiatric history. Conflating them loses both signals.

Capture impact on function. Sleep, appetite, work, relationships, hobbies, daily tasks. The patient who can no longer drive or cook or work tells you something about severity that pure symptom enumeration doesn't. Function defines severity in psychiatry more than symptom count does.

Identify the precipitant when one exists. What changed in the patient's life that preceded the symptoms? Loss, transition, medical illness, medication change, substance use, stress — any of these can launch an episode. The precipitant shapes treatment planning and supports formulation. The patient whose depression followed job loss may benefit from career counseling alongside medication; the patient whose depression came out of nowhere may need different attention.

The HPI ends with current state. Where are things now? What is the patient experiencing today? This connects the narrative to the MSE that follows and to the assessment that integrates both.

Anchoring the HPI on a specific time point — "take me back to when you first noticed." Margin notes on why anchoring prevents drift.

The anchor

The HPI is a chronological narrative anchored on the current episode. Build the story of onset, course, and impact before diving into diagnostic criteria.

The HPI captures impact — work, relationships, sleep, appetite, hobbies. Margin clusters on each functional domain.

Prove it

A patient says "I've been depressed for years." How do you construct an HPI from that?

This connects to

E1.3

Chief Complaint

Where the HPI begins.

E3.2

Past Psychiatric History

The longitudinal frame.

E5.1

Biopsychosocial Formulation

What the HPI feeds into.

Locked concepts unlock as you reach them on the path.