If your elderly parent has dementia and is no longer capable of making informed or responsible financial decisions, can you use a durable power of attorney to limit their ability to access and spend their money? For example, can you somehow use it to get a bank to lock an account down so that the parent can't withdraw money, write checks or use a debit card, without your approval of the transaction? How can you stop a sibling from taking financial advantage of the parent's mental state in order to obtain "gifts" that are draining the parent's assets?

