Objective: There is a plethora of theories about the pathophysiology behind a sport-related concussion. In this review of the literature. the authors evaluated studies on the pathophysiology of sport-related concussion and professional athlete return-to-play guidelines. The goal of this article is to summarize the most common hypotheses for sport-related concussion. https://www.marketingjeunesse.com/product-category/comb-out-brush/