2 Focused History Taking

Purpose and priorities

A focused history gathers the information most relevant to a patient’s current concern. It begins with the patient’s account, then clarifies the symptom and identifies relevant medical conditions, medicines, allergies, and associated symptoms.

Keep the interview respectful and organized, adapting it to the patient’s condition. Urgent needs take priority over completing a checklist. A history is complete when it provides a clear, relevant account—not when every possible question has been asked.

Elicit the presenting concern

Begin with an open-ended invitation such as “What brought you in today?” Let the patient describe the concern in their own words before asking focused questions. Record the main concern briefly, preferably using the patient’s language. If there is more than one issue, clarify which needs attention first.

Characterize the symptom

Build a clear timeline by asking when the concern began, how it has changed, and what is happening now. Use OLDCARTS to organize questions about the symptom:

• Onset: When did it begin? Was it sudden or gradual?

• Location: Where is it? Does it spread or move?

• Duration: How long does it last? Is it constant or intermittent?

• Character: How would the patient describe it, such as sharp, pressure-like, or burning?

• Aggravating or alleviating factors: What makes it worse or better?

• Radiation: Does it travel anywhere?

• Timing: How often does it occur? Is there a pattern or change over time?

• Severity: How severe is it? A scale from $0$ to $10$ may help when appropriate.

Also ask about associated symptoms, relevant exposures or events, prior episodes, and treatments tried. Clarify whether treatments helped or caused problems. Follow-up questions should clarify the patient’s account rather than letting the mnemonic replace clinical judgment.

Organize the symptom account

For example, a patient might report that discomfort began yesterday afternoon, is centered in the upper abdomen, comes and goes, and worsens after eating. The patient describes it as burning, says it does not radiate, rates it $5/10$, reports nausea, and says an over-the-counter antacid helped briefly. This kind of summary organizes the account without making a diagnosis.

Gather relevant medical history

Focus on conditions and events that could affect the current concern or its evaluation. Ask about significant current and past illnesses, prior episodes, hospitalizations, and relevant procedures or surgeries.

Clarify details such as diagnosis, treatment, complications, or current control when they matter to the presenting problem. In a focused encounter, prioritize pertinent history rather than collecting every element of a comprehensive health history.

Review medicines and allergies

Ask what the patient actually takes, including prescription medicines, nonprescription products, vitamins, supplements, and medicines used only occasionally. For each relevant medicine, record its name, dose, route, and frequency. When pertinent, clarify the reason for use and any recent changes or missed doses. Compare the patient’s account with available records and resolve discrepancies when possible.

Ask about allergies and the reaction, not just whether an allergy is listed. Record the specific substance and what happened, including approximate timing and seriousness if known. Distinguish a suspected allergic reaction from an adverse effect or an uncertain history; do not assume that a medication-list entry explains the reaction.

Check pertinent associated symptoms

Ask briefly about symptoms in other body systems that could clarify the current problem or reveal important associated concerns. Start broadly with a question such as “Have you noticed anything else?” and then ask targeted questions based on the presenting concern. For example, a focused respiratory review might ask about cough, shortness of breath, and chest discomfort.

Record relevant positives and meaningful negatives. Do not document a system as negative if it was not assessed. If a new symptom emerges, clarify it rather than treating it as a simple checklist response.

Organize and document the history

Present the information in a consistent order so another clinician can follow it:

1. Presenting concern: Brief reason for the visit.

2. History of present illness: Timeline and symptom characteristics.

3. Relevant medical history: Pertinent illnesses, hospitalizations, or procedures.

4. Medications: Current use and relevant recent changes.

5. Allergies: Substance and reaction, or clearly documented uncertainty.

6. Pertinent review of systems: Relevant positives and negatives.

Use concise, neutral language. Separate what the patient reports from information confirmed in the record. Identify the information source when it is not the patient, and note important gaps or uncertainty. Open-ended questions help elicit the account; structured follow-up makes it clear and useful.