At the risk of becoming the forum bore on the subject:
In the UK you have the right to see your medical records, the right to ensure those records are accurate and the right to request (but not demand) that records you consider inaccurate are amended or deleted.
In the 1980's and before, medical records were often full of notes (some not always polite!) that were little more than speculation as a doctor, and often his medical partners, worked their way through an often complex set of symptoms to reach a diagnosis.
It all been different since 1991. Notes are now mostly held on computer. Old records have usually been pruned for non-relevant comments and data and now they should be accurate and relevant.
Everyone considering a flying career should inspect their medical records first to see if there is anything within them that may hinder the granting of a medical certificate. Discuss with your doctor anything that looks like it may be disqualifying and ask if he is certain the medical evidence backs up the diagnosis. If not he can at his sole discretion modify the record. If there is no evidence-based diagnosis, only speculation, and the problem is no longer current, you should politely ask for it to be removed, or a more general term used.
However at the end of the day aviation medical certification is there for your protection as well as everyone else. If they say you can't fly you can be pretty sure it would be very unwise of you to try.
http://www.bbc.co.uk/dna/actionnetwork/A1181657