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.
Cellulitis is an infection of the skin and the tissue under it caused by bacteria. This infection is serious and needs to be treated right away. Without treatment the infection can damage skin tissues and spread quickly to other parts of your body. A skin infection that is not treated right away may lead to: