Chief Complaint (CC) and History of Present Illness (HOPI/HPI) are the first two components of a patient's clinical history-taking, taken in that order:
1. Chief Complaint (CC)
The chief complaint is the primary reason the patient is seeking medical attention — stated concisely, ideally in the patient's own words (e.g., "chest pain for 2 days"). It answers the question "why did the patient come in today?"
- Kaplan & Sadock's Comprehensive Textbook of Psychiatry defines it as "Exactly why the patient came to the physician/psychiatrist, preferably in the patient's own words" - Kaplan & Sadock's Comprehensive Textbook of Psychiatry
- Campbell-Walsh Urology notes a complete history begins with the chief complaint before moving to the rest of the workup - Campbell Walsh Wein Urology
2. History of Present Illness (HOPI / HPI)
The HOPI (also written HPI) is the detailed, chronological expansion of the chief complaint. After the chief complaint is identified, the interview proceeds into the HPI, which covers:
- Onset - when and how the symptom started (sudden vs. gradual)
- Duration and course over time
- Location/radiation of the symptom
- Character/quality
- Aggravating/relieving factors
- Associated symptoms
- Prior episodes and treatments tried
As stated in the library: "The history of present illness includes the chief complaint...the nature of the current problems, and their current treatments" - Kaplan & Sadock's Comprehensive Textbook of Psychiatry
A common mnemonic used to structure the HOPI is OPQRST (Onset, Provocation/Palliation, Quality, Radiation, Severity, Timing) or SOCRATES for pain specifically.
Where they fit in a full history
1. Identifying data
2. Chief Complaint (CC)
3. History of Present Illness (HOPI/HPI)
4. Past medical/surgical history
5. Medications & allergies
6. Family history
7. Social history
8. Review of systems
This structure is consistent across specialties — general medicine, psychiatry, urology, and surgery texts all follow chief complaint -> HPI as the opening sequence of history-taking - Symptom to Diagnosis: An Evidence-Based Guide.
If "hoping" in your question was meant as something else (e.g., a specific clinical scenario), let me know and I can dig deeper.