Clinical Interviewing and Patient Communication

Active Listening

Active listening is demonstrated through attentive posture, appropriate eye contact, and specific verbal techniques:

• Minimal encouragers: Brief prompts like "Go on" to maintain the patient's flow.
• Clarification: Seeking specific meaning (e.g., "What do you mean by 'sore'?").
• Reflection: Acknowledging the patient's emotional state (e.g., "It sounds as though this has been worrying you").
• Summary: Recapping information to ensure accuracy.

The Structure of a Complete History

A comprehensive history is composed of several distinct sections:

1. Chief Complaint (CC): The principal reason for seeking care.
2. History of Presenting Complaint (HPC): The chronological story of the problem.
3. Past Medical and Surgical History: Including hospitalizations and previous surgeries.
4. Medication and Allergy History: Including prescriptions, OTC, and supplements.
5. Dental History: Previous treatments and experiences.
6. Family and Social History: Including tobacco, alcohol, and cannabis use.
7. Review of Systems: A targeted check for systemic associations.
8. Patient Concerns and Expectations.

The Chief Complaint: Patient Words vs. Clinician Interpretation

The Chief Complaint must be recorded in the patient's own words. A common error is converting the complaint into a clinical diagnosis prematurely.

Crucial Rule: Patient's words $\neq$ Final diagnosis.

Building the History of Presenting Complaint (HPC)

The HPC should move from the chief complaint to a chronological account, establishing what happened, what changed, and what is happening now. A strong HPC summary includes chronology, location, symptoms, modifiers, and negatives.

Clinicians can use the following framework to ensure a complete HPC:

• Onset: Was it sudden or gradual? What was happening at the time?.
• Duration and Course: Is it continuous or intermittent? Is it stable, improving, or worsening?.
• Location: Ask the patient to point to the site. Is it localized, multifocal, or diffuse?.
• Character/Quality: Is the pain sharp, dull, or burning? Is the sensation numb or tingling?.
• Severity: Use functional impact (e.g., difficulty eating or sleeping) rather than relying solely on a 0-10 scale.
• Aggravating/Relieving Factors: Does food, brushing, or specific medications change the symptom?.
• Associated Symptoms: Look for "red flags" like fever, swelling, or weight loss.

Medical, Medication, and Allergy Histories

Medical history is not just a form to be filed; it is clinical information that informs dental decisions.

Medication and Allergy

When recording medications, aim for the "Four Pillars": Name $\cdot$ Dose $\cdot$ Frequency $\cdot$ Indication. It is vital to ask how the patient actually takes the medication, not just how it was prescribed.

Regarding allergies, clinicians must differentiate between a true allergy (immune-mediated reactions like anaphylaxis) and an adverse effect (predictable side effects like nausea or headache).

Social History and Risk Assessment

Social history should be collected neutrally and without judgment to ensure accurate risk assessment. For tobacco and alcohol, focus on:

• Tobacco: Type $\times$ Amount $\times$ Duration.
• Alcohol: Type, amount, and frequency.

Barriers and Diagnostic Failure

Communication failure can directly lead to diagnostic failure. Clinicians must be vigilant against common barriers, including:

• Interrupting the patient too early.
• Using medical or dental jargon.
• Multitasking while the patient is speaking.
• Ignoring cultural, language, or literacy needs.
• Assuming the patient understands a diagnosis or medication.

To avoid these pitfalls, always summarize the history into a "Problem Representation" before proceeding to the examination. This summary should include the Who + What + Where + When + Key Context.

Example of a Strong Problem Representation: "A 58-year-old patient with a 6-week history of a persistent painless white patch on the left lateral tongue, with no previous episodes and a long history of tobacco exposure".