What does the abbreviation 'PRN' refer to in a medical context?

In a medical context, 'PRN' stands for "as needed based on symptoms." This abbreviation is commonly used in healthcare settings to indicate that a medication or treatment should be administered only when necessary, rather than on a fixed schedule. For example, pain relief medications may be prescribed to be taken PRN, meaning a patient should take them when they are experiencing pain rather than at regular intervals. This approach allows for more tailored patient care since it directs treatment based on the patient's current condition and symptoms. The context of using PRN enhances patient comfort and optimally addresses their medical needs.