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.
Strep Cellulitis. Cellulitis triggered by Streptococcus pyogenes usually affects larger areas of skin and may spread rapidly, notes the MMOML. This tendency stems from the bacteriaâs ability to damage cell structures that normally limit inflammatory reactions.