How do I know if my abrasion is infected?

Rubor, Dolor, Tumor. The classic signs of inflamation are redness (rubor), swelling (tumor) and pain (dolor). Pus on the surface or in drainage and fever would also be signs of infection.
Rubor, dolor, tumor. Redness (rubor), swelling (tumor), pain (dolor), are the cardinal symptoms of inflemmation and infection. Pus on the surface or draining pus or fever would also be signs of infection.