Sentence:  If the predisposition to the disease has arisen from a plethoric state of the system, or from a turgescence in the vessels of the head, this is to be obviated by bleeding, both generally and topically, but more particularly the latter; an <WSD>abstemious</WSD> diet and proper exercise; and by a seton in the neck. 
Meaning of the word marked with <WSD> tags:  Sparingly used; used with temperance or moderation.