After such a result, no one could call their self-deception a mere imposture, and unconditionally condemn it as such.
This numerous class of patients certainly contributed not a little to the maintenance of the evil, for their fantastic sufferings, in which dissimulation and reality could scarcely be distinguished even by themselves, much less by their physicians, were imitated in the same way as the distortions of the St.Vitus's dancers by the impostors of that period.

It was certainly by these persons also that the number of subordinate symptoms was increased to an endless extent, as may be conceived from the daily observation of hysterical patients who, from a morbid desire to render themselves remarkable, deviate from the laws of moral propriety.

Powerful sexual excitement had often the most decided influence over their condition.

Many of them exposed themselves in the most indecent manner, tore their hair out by the roots, with howling and gnashing of their teeth; and when, as was sometimes the case, their unsatisfied passion hurried them on to a state of frenzy, they closed their existence by self destruction; it being common at that time for these unfortunate beings to precipitate themselves into the wells.
It might hence seem that, owing to the conduct of patients of this description, so much of fraud and falsehood would be mixed up with the original disorder that, having passed into another complaint, it must have been itself destroyed.

This, however, did not happen in the first half of the seventeenth century; for, as a clear proof that tarantism remained substantially the same and quite unaffected by hysteria, there were in many places, and in particular at Messapia, fewer women affected than men, who, in their turn, were in no small proportion led into temptation by sexual excitement.