-mania

-μανία/ -mania  > μανία/mania (=combining form meaning passion, forse, mania, enthusiasm, frenzy) >  μένος/menos(=life, vigor)

In Psychology mania is defined as the state of abnormally elevated or irritable mood in a period of time of seven or more days, where the mood is not causedby drugs or a medical illness. 

Sourse: American Psychiatric Association's diagnostic manual.