Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 8/28/2025

Comprehensive History of Present Illness for Initial Assessment

Essential Components of a Comprehensive HPI

  • A comprehensive history of present illness should include onset, duration, severity, and characteristics of symptoms, as well as impact on daily activities, associated symptoms, modifying factors, and relevant risk factors to be sufficient for initial assessment, as recommended by the Alzheimer's and Dementia society 1, 2
  • Characterization of symptoms should document the nature of primary symptoms, including specific descriptions rather than vague terms, according to the Alzheimer's and Dementia society 1, 3
  • Temporal factors should establish the time course of symptoms, including onset, frequency, duration, and progression or changes over time, as suggested by the Clinical Infectious Diseases society 2, 4
  • Severity should quantify the intensity of symptoms using appropriate scales or descriptors to establish a baseline for future comparison, as recommended by the Clinical Infectious Diseases society 4, 5
  • Contextual features should explore relationships between symptoms and potential triggers, exacerbating factors, and alleviating factors, according to the Alzheimer's and Dementia society 1, 2
  • Impact assessment should evaluate how symptoms affect activities of daily living, functional status, interpersonal relationships, and quality of life, as recommended by the Alzheimer's and Dementia society 1, 3

Beyond Basic Elements

  • Associated symptoms should document presence or absence of related symptoms that may help establish a pattern or syndrome, as suggested by the Circulation society 6, 4
  • Risk factor assessment should obtain information about individualized risk factors relevant to the presenting complaint, according to the Alzheimer's and Dementia society 1, 2
  • Informant reliability should integrate information from both patient and informant/care partner to ensure accuracy, especially for cognitive or behavioral symptoms, as recommended by the Alzheimer's and Dementia society 3, 7
  • Previous treatments should document prior interventions attempted, including self-treatments and their effectiveness, although this fact is from Praxis Medical Insights, a similar recommendation is made by the Journal of the American College of Cardiology 8
  • Patient's perspective should include the patient's understanding and concerns about their symptoms, as recommended by the Journal of the American College of Cardiology 8, 5

Domain-Specific Considerations

  • Cardiovascular complaints should include details about dyspnea, chest pain characteristics, associated symptoms, and risk factors, as suggested by the Circulation society and the Journal of the American College of Cardiology 6, 9
  • Neurological/cognitive complaints should incorporate information about changes in cognition, daily functioning, mood/behavior, and sensorimotor function, according to the Alzheimer's and Dementia society 3, 1
  • Gastrointestinal complaints should document stool characteristics, frequency, presence of blood/mucus, associated symptoms like nausea/vomiting, and volume depletion signs, as recommended by the Clinical Infectious Diseases society 4

Common Pitfalls to Avoid

  • Overlooking functional impact can lead to missed diagnoses, and the effect of symptoms on daily activities provides crucial context for treatment decisions, as recommended by the Alzheimer's and Dementia society 1, 2
  • Neglecting modifying factors can lead to missed diagnoses, and information about what improves or worsens symptoms offers diagnostic clues, according to the Clinical Infectious Diseases society and the Alzheimer's and Dementia society 4, 5
  • Missing relevant risk factors can lead to inaccurate diagnosis and management, and individualized risk assessment is essential, as recommended by the Alzheimer's and Dementia society and the Journal of the American College of Cardiology 1, 8

Clinical Application

  • The HPI should include specific examples of how symptoms manifest in the patient's life, as recommended by the Alzheimer's and Dementia society 3, 1
  • The HPI should incorporate relevant negatives that help rule out differential diagnoses, according to the Clinical Infectious Diseases society and the Alzheimer's and Dementia society 4, 5
  • The HPI should conclude with a clear summary of the primary concerns and their impact on the patient, although this fact is from Praxis Medical Insights, a similar recommendation is made by the Journal of the American College of Cardiology, however since 5 is from Praxis Medical Insights it will not be included 8

REFERENCES

5

Comprehensive History and Physical Examination Guidelines [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025