Science of performing diagnostic tests.

Advances in diagnostic technologies have revolutionized the field of neurology. There is no doubt that such technologies in clinical practice can hold great promise to improve the diagnosis of movement disorders. However, our concern in the era of diagnostic tests is that clinicians become too dependent on the tests without proper consideration of the clinical context. No matter how excellent a diagnostic test itself is, it is a different matter in clinical practice whether the test enhances the diagnostic accuracy or provides added value beyond the information that is already available. In this article, we explain why clinical evaluation continues to have a central role in the diagnosis of diseases.