That population is likely larger than they think because most with PCS symptoms stop complaining to doctors so they fall of the radar so to speak. .

Very few with PCS apply for or receive disability because most can struggle along with their symptoms. It is the more serious mTBI's and TBI that are most of the statistic. Plus, it is difficult to document injury and symptoms because the same symptoms can easily be faked.

Many with PCS end up in prisons and jails. Studies show that 60 to 80 % of the incarcerated population are living with symptoms from head injuries.

Attempting to put numbers to PCS is difficult.