Visible Meridian Phenomena after Acupuncture: A Series of Case Reports.

Background: In accordance with the meridian theory of Traditional Chinese Medicine (TCM), meridian phenomena are observed along the course of a meridian following acupuncture. Their visible manifestations include alterations in the color (reddening or whitening) of the skin as well as papule and vesicle formation.

Objectives: The aim of the present work is to report a series of visible meridian phenomena manifested in human subjects and to correlate them to TCM concepts.