I request all of my stuff and keep records now. I used to not bother until I learned I had no choice but to be my own best advocate if I wished to survive the medical and mental health systems with any shred of my health and sanity left in tact. Several years ago, I was told I had the body of an 86 yr old instead of a 46 yr old with no cartilage left between the ball and socket and needed a complete shoulder replacement if I ever wished to experience pain relief and have any quality of life.
I requested a copy of the doc's notes to share with my chiro, but then noticed on the notes he wrote "no surgery recommended at this time". WTF?! That's the exact opposite of what he told me in a tone that indicated urgency. He then apologized to me via his secretary for my total misunderstanding of what he said and wouldn't meet with me unless I paid for another office visit. Needless to say, I never went back, nor got the surgery, and have since experienced full range of motion being restored and the pain is gone, unless I overdo it. Like the old saying goes, if all you have is a hammer, every problem becomes a nail. I guess if all you have is a surgical knife, every problems requires surgery? Surgeons can remove everything but the root cause, it seems, but it sure is great for return business.
I requested my sister's mental health records after I helped her through a hospitalization that was such a bad experience in so many ways, and quickly realized how things need to be worded to get more complete records. Not sure if the terminology on the forms are the same in various states, countries, etc., but I learned in order to get more thorough information, you should always check the "Other" box, in addition to your relevant options, and specifically request narrative doctor, nurse, social worker, psych, etc. notes by writing those in. Otherwise, you just receive discharge notes and vague formal summaries.
A friend also shared with me that with mental health records, you are entitled by law to receive a copy of the clinician's summary notes (which should contain records of formal diagnoses, prescriptions, presenting complaints, etc.). However, therapy "progress notes" (more detailed comments on how a therapy session went, doctor's notes to self on next steps, details of what you said you were thinking, etc.) are not automatically included in this in all states. In some places it may be up to the clinician to determine whether or not they want to give you the more detailed notes.