Diagnosed and Nondisclosed Sport-Related Concussion: An Exploratory Comparison Study by ADHD Status in Collegiate Athletes.

Objective: To determine if ADHD status in collegiate athletes was associated with differences in the number of diagnosed and nondisclosed sport-related concussions, and reasons why suspected concussive injuries were not reported.

Method: A cross-sectional survey was completed by 858 collegiate athletes (65 with ADHD; 793 without ADHD). The survey included self-report items regarding ADHD status and histories of diagnosed and nondisclosed sport-related concussions.