AFAIK the World Health Org changed the definition in the last year or so to say it isn't a mental illness. Does anyone with scientific or medical or psychiatric knowledge understand why the definition changed? If it's not a mental illness, what kind of condition is it classed as and why? I've tried looking into this but it all goes over my head. Or if this has been discussed and I missed it, please could some kind person post a link to that thread. Ta.