This particularly unpleasant form of headache is sometimes known as sick headache and a percentage of the population, mostly female, is prone to recurrent attacks. The patient will be warned that a migraine is imminent by visual disturbances such as bright flashes of light and squiggly patterns before the eyes. These are caused by the [...]

It is important that we consider the matter of depression carefully. Depression may be caused through anxiety, in which case it can be relieved by the techniques which I am about to describe; on the other hand it may result from a quite different type of nervous illness which is best treated by other means. [...]