Munchausen s syndrome is one of group of conditions known as factitious disorders.
It is in a class of disorders known as factitious disorders which involve "illnesses" whose symptoms are either self-induced or falsified by the patient ...
In that context I feel like it isn't the established word factitious, but rather a new one meaning "half-factual, half-fictional".
My sentiment and my reason combat more than ever the idea of factitious distinctions, the inequality of conditions imposed as a right acquired by some, as a loss deserved by others.
Besides beer, the Egyptians had what Pliny calls factitious, or artificial, wine, extracted from various fruits, as figs, _myxas_, pomegranates, as well as herbs, some of which were selected for their medicinal properties.