What is a 'pertinent positive' in the history of present illness?

What is a 'pertinent positive' in the history of present illness?

• A. A symptom that supports the working diagnosis
• B. A symptom that negates the diagnosis
• C. A symptom unrelated to the current problem
• D. A negative finding in the physical exam

Answer: (A)

In the history of present illness, a pertinent positive is a symptom or detail that, if present, supports the working diagnosis and helps shape what tests or treatments are most likely to be appropriate. It adds to the clinical story in a way that makes the suspected condition more plausible. For example, describing chest pressure with radiation to the arm is a pertinent positive when evaluating possible heart-related pain, because it strengthens suspicion for myocardial ischemia. These positives help differentiate the likely cause from other conditions that might look similar. Conversely, a symptom that would negate the diagnosis would be a pertinent negative, which is the absence of expected signs. A symptom unrelated to the current problem isn’t helpful for guiding the diagnosis, and a negative finding in the physical exam isn’t part of the history of present illness.

In the history of present illness, a pertinent positive is a symptom or detail that, if present, supports the working diagnosis and helps shape what tests or treatments are most likely to be appropriate. It adds to the clinical story in a way that makes the suspected condition more plausible. For example, describing chest pressure with radiation to the arm is a pertinent positive when evaluating possible heart-related pain, because it strengthens suspicion for myocardial ischemia. These positives help differentiate the likely cause from other conditions that might look similar.

Conversely, a symptom that would negate the diagnosis would be a pertinent negative, which is the absence of expected signs. A symptom unrelated to the current problem isn’t helpful for guiding the diagnosis, and a negative finding in the physical exam isn’t part of the history of present illness.