What does the abbreviation "prn" signify in a medical context?

In a medical context, the abbreviation "prn" stands for "as needed." This term is commonly used in prescriptions and medical orders to indicate that a medication or treatment should be administered only when the patient requires it, rather than on a scheduled basis. For example, a doctor might prescribe pain medication "prn" to allow the patient to take it when they are experiencing pain, rather than at set intervals regardless of their pain level.

This flexibility is crucial in healthcare, as it allows for tailored treatment that can better meet the individual's current needs. The concept behind "as needed" supports patient comfort and effective management of their condition.