Check: A character makes a Concentration check whenever he or she may potentially be distracted while engaged in some action that requires his or her full attention (such as making a Disable Device or Treat Injury check). Situations such as taking damage, working in a bouncing vehicle, or dealing with severe weather can require a character to make a Concentration check.
If the Concentration check succeeds, the character may continue with the action. If the Concentration check fails, the action automatically fails (with the appropriate ramifications, if any), and the action is wasted. A successful Concentration check still doesn’t allow a character to take 10 when in a stressful situation; he or she must roll the check as normal.
The check DC depends on the nature of the distraction.
Try Again?: Yes, though a success doesn’t cancel the effects of a previous failure, such as the disruption of an action that was being concentrated on.
If the Concentration check succeeds, the character may attempt the action normally without incurring any attacks of opportunity. If the Concentration check fails, the related check automatically fails just as if the character’s concentration had been disrupted by a distraction. The character does not provoke attacks of opportunity, however.
Time: Making a Concentration check doesn’t require an action; it is either a reaction (when attempted in response to a distraction) or part of another action (when attempted actively).
|Damaged during the action 1||10 + damage dealt|
|Taking continuous damage during the action 2||10 + half of continuous damage last dealt|
|Vigorous motion (bouncy vehicle ride, small boat in rough water, belowdecks in a storm-tossed ship, riding a horse)||10|
|Violent motion (very rough vehicle ride, small boat in rapids, on deck of storm-tossed ship, galloping horse)||15|
|Extraordinarily violent motion (earthquake)||20|
|Entangled in net or snare||15|
|Grappling or pinned||20|
|Weather is a high wind carrying blinding rain or sleet||5|
|Weather is wind-driven hail, dust, or debris||10|
1 Such as an activity that requires more than a single full-round
action. Also from an attack
of opportunity or readied attack made in response to the action being taken (for activities requiring no more than a full-round
2 Such as from catching on fire.