A patient states she once had an allergic reaction to penicillin when treated for an infection.Where does this belong in the patient's health record? Review of systems Past medical history Family history History of present illness

## Step 1<br />The problem is asking where a patient's past allergic reaction to penicillin would be recorded in their health record. The options provided are: Review of systems, Past medical history, Family history, and History of present illness.<br /><br />## Step 2<br />The patient's past allergic reaction to penicillin is a significant piece of information about their health history. This information is not related to the patient's current symptoms (History of present illness), their family's health history (Family history), or a systematic review of the body's systems (Review of systems).<br /><br />## Step 3<br />The patient's past allergic reaction to penicillin is a part of their past medical history. This is because it is a significant health event that has occurred in the past and could potentially impact their current health or future medical treatment.