Many of the parents were concerned that there was some kind of infection or environmental pollutant at the High School, and a popular theory was that the girls had picked something up on the sports field. Then it was discovered that there had been a toxic spillage on the nearby railway line, back in the 1970s. At the same time, another doctor and expert in childhood illness contacted the girls because he believed that their symptoms were caused by a streptococcal infection of the throat that can sometimes cause neurological effects (This latter development confirming the adage that for every expert opinion, there’s an equal and opposite expert opinion.) But he treated some of the girls with antibiotics, and their symptoms seemed to recede.
This was explained by the neurologists who supported the conversion disorder diagnosis as the placebo effect, which may well be right, because most of the girls being treated for conversion disorder seemed to be in recovery too. But who knows, really.
What interested me was the resistance to the ‘psychogenic’ diagnosis, which seems to have been interpreted by many of the girls and their parents as a kind of dismissal. One of the experts on the TV shows they went on explained that even though no neurological cause had been found, it was a neurological diagnosis because it’s all neurological. But so far a convincing neurological process for conversion disorder hasn't been found. The Wikipedia entry states;
"A number of [neuroimaging] studies have been performed, including some which suggest that blood flow in patients brains may be abnormal while they are unwell. These have all been too small to be confident of the generalisability of their findings, however, so no neuropsychological model has been clearly established"
And there’s the rub. In this age of neurobiological reduction, where the mind is supposedly reducible to functional neurobiology, the theory says that at some level we can explain what’s going on purely in terms of what’s happening in the brain. And yet in practise, a sort of methodological parallelism remains, and there does seem to be a distinction between ‘psychogenic’ illness and neurologically based conditions like Tourette’s or epilepsy; and in fact, conversion disorders, where a person unconsciously ‘mimics’ the symptoms seem to me to highlight this distinction. Maybe, then, the search for a common neurobiological denominator's basically futile (or at least not the only possible approach), and we actually need to start thinking (again) in terms of minds, selves and consciousness....
