These can be divided into:
1. Primary cause
2. Secondary causes
Primary cause We are referring here to heredity since, in almost all cases, we find the same problems or nervous symptoms in a patient’s progenitors, to a more or less pronounced degree. Note that heredity, above all, creates an environment propitious for the development of the disease, rather than creating the disease itself.
From a cerebral point of view, we can say that the effect of heredity is either to inhibit the progressive development of cerebral control, which would otherwise occur completely naturally starting at a certain age, or to instill patients with a kind of instability or insecurity.
Secondary causesAmong the secondary causes, the most important is some kind of psychological or moral shock, which suddenly suspends cerebral control, followed by more long-term causes which gradually wear patients down: a personal tragedy followed by a long period of worry, for example, or being constantly overworked, or the aftermath of medical surgery, or any other kind of trauma.