After a brief consultation with my medical books on the internet, it turns out that anaemia is treatable but it means that he doesn't have enough haemoglobin in his blood or something like that. Now I'm no scientist, but I'd expect you'd want to give a comprehensive medical to a player who costs €57million and diseases like anaemia are the kind of thing I'd want my doctor to pick up on. What did they even check? "Oh yes he has a head, that is good"
I suppose in a way it's sort of a hidden disease because you can't see it, but the doctor apparently expressed concerns that Neymar only weighs 10 stone. If someone that good is close to failing medicals, Darren Fletcher must be absolutely shitting himself about getting fit enough to play again.
ho ho ho
poor darren :-(