I think when you tell them — you’re really informing them that you are verbally acknowledging you understand something they already know.
It’s probably helpful since they already know — when you over-react you can acknowledge and apologize . . . yet don’t blame the disorder. Let the apology be from you, let it stand on it’s own.
When you apologize and let it stand on it’s own, you are standing in front of the misbehavior claiming ownership. If you apologize and blame the conditions, you are dodging the responsibility . . . it matters.