What does the term 'unilateral' mean in a medical context?

In a medical context, the term 'unilateral' refers to something that affects only one side of the body. This can apply to various situations, such as unilateral pain, where discomfort is present on one side, or unilateral paralysis, where movement is affected on one side only. Understanding this term is essential in diagnosing and treating conditions, as it helps healthcare providers pinpoint the location and extent of an issue. The concept of 'unilateral' is often contrasted with 'bilateral,' which means relating to both sides. This distinction is crucial in medical assessments and interventions.