@freemo it is a cruel disease yet I find it so interesting. From a neurobiological point of view, loads of stuff seems to be implicated in this: metalloproteases such as MMP-9, when overexpressed, can degrade the extracellular matrix of inhibitory GABAergic neurons so that the neural network is altered, leading to schizophrenia-like symptoms. But MMP-9 is just one molecule among many others: just on the top of my head I remember Reelin, MMP-2, semaphorins. Basically we don't know shit about this (and this of course makes it more interesting)