Once a child reaches the age of eighteen he or she is a legal adult. That means, if your legal adult living at home has a medical emergency, you have no right to any information about his condition. Parents can be shut out of the decision-making process in favor of the folks in white coats and scrubs and the legal eagles in suits and judicial robes.
I'm posting this next video from our End of Life Series and urge you to watch at least the first five minutes. It's a warning about what awaits your young adults if they end up hospitalized with no medical directive defending their rights.