groznica

1. fever; chills
   Celu noć sam imao groznicu. — I had a fever all night.
   Trese me groznica, ne mogu da ustanem. — I have the chills, I can't get up.
2. fever; excitement; frenzy
   Grad je zahvatila navijačka groznica. — The city was gripped by sports fever.
   Pred put uvek imam putnu groznicu. — I always get pre-trip jitters.
3. colloq. (on the lip) cold sore
   Iskočila mi je groznica na usni. — I've got a cold sore on my lip.

For an ordinary raised temperature people usually say temperatura: imam temperaturu.