In simple linear regression a single independent variable is used to predict the value of a dependent variable. In multiple linear regression two or more independent variables are used to predict the value of a dependent variable. The difference between the two is the number of independent variables.
Watching for Systemic Symptoms. 1  1. Watch from swollen glands. Serious cases of cellulitis will spread beyond the initially infected region to become systemic and impact the rest of the body. 2  2. Notice if you experience fever and/or chills.
Most people with cellulitis respond to the antibiotics in 2 to 3 days and begin to improve. In rare cases, the cellulitis may spread through the bloodstream and become serious. Even more rarely, surgery is required to drain an abscess or remove dead tissue.