Beyond this point, schizophrenia is shrouded in mystery. There are no laboratory tests available to confirm a diagnosis, and psychiatrists have many divergent and contradictory theories about its cause. Yet the profession is certain that schizophrenia is a medical problem, and is virtually unanimous about the correct treatment for it. Most people diagnosed are treated, often involuntarily, with powerful, debilitating drugs that manage but do not cure the condition. And now there is a growing worldwide attempt to identify ‘pre-psychotic’ adolescents, and to treat them similarly.