Eric Reid has reached scary territory

Concussion treatment is a hot button subject in the NFL and it could be an issue in San Francisco in the coming days and weeks.

Standout rookie safety Eric Reid suffered his second concussion of the season Sunday in a loss to Carolina. Reid went down hard after a violent collisions with Carolina running back Mike Tolbert. Reid also suffered a concussion in Week 2. He came back the next week.

Like that time, Reid must pass a league test before being cleared to play. However, with multiple concussions, it could become more difficult for players to pass the test. It is not out of the question that Reid misses one or more games. Reid did tell reporters Tuesday he is feeling good.

It is believed that San Diego left tackle King Dunlap suffered his third concussion of the season Sunday. On ESPN’s “NFL Insiders” on Tuesday former St. Louis general manager Billy Devaney said when players get concussed three times in a season a team has to seriously consider placing a player on the injured reserve.

Other NFL players such as Dwight Lowery, Stephen Burton and Matt Conrath have all missed multiple games this season because of concussions. The career of former Detroit running back Jahvid Best ended after three major concussions.

None of this is to suggest Reid is in danger of having his season or his career cut short because of Sunday’s injury. We don’t know enough. But anytime a player suffers multiple head injuries in the same season it is a concern.