Medical Mystery

Name me a medical condition that affects 2% of the UK population, that has no NICE or SIGN guidance, that only offers only a partial screen and bloods on the NHS, that has only one medicine approved for treatment for the RCP, (which was never formally trialled, but was 'grandfathered by the FDA) and where doctors who attempt to give their patients other medications that work for them are reported by other doctors to the GMC.
Stuck? Watch this video or if you don't have time, here's the transcript.
Can anyone explain this?

Chocolate Survival Rate on Wards

It's always amused me that in the Harry Potter books, the cure for depression caused by Dementors (horrible creatures that suck all the happiness out of you) is chocolate. A group of doctors have taken this a step further and conducted a study on the median survival rate of a chocolate on a ward, whether Quality Street was preferable to Roses and who were the biggest guzzlers. I'll leave you to find out the answers here.
Now where did I put that Tunnock's teacake?