According to the waiver they can ONLY look at: authorize the Department of Health and Mental Hygiene, or any other similar agency or department of another state, to disclose to the Department of State Police information limited to whether I suffer from a mental disorder as defined in §10-101(f)(2) of the Health--General Article and have a history of violent behavior against anyone; or whether I have been confined for more than 30 consecutive days to a mental health facility as defined in § 10-101 of the Health--General Article.
However, they search a lot of different databases... I don't know what information is in all of the databases, but you can be sure that it's more than you probably assume. Define similar???
http://www.oag.state.md.us/Opinions/Advice2007/astle.pdf <- read this, this tells you they can investigate anything they ask you about on the Form 77R. The only reason they ask for a mental health release is because of HIPAA. If they didn't have to ask for it, they wouldn't.
Wow. I guess the other threads were right in being upset. It is quite arbitrary. Thank you for your input. So much for trying to play devil's advocate.