All of these outbreaks have tended to disproportionately affect women, and in time, when doctors failed to find the one cause of the disease, they thought that these outbreaks were mass hysteria.
Estos brotes tendían a afectar desproporcionalmente a las mujeres y, luego, si los médicos no hallaban la causa real de la enfermedad pensaban que estos brotes eran casos de histeria colectiva.