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.
Cause of Cellulitis. The most common cause of cellulitis in adults with no other medical conditions is group A streptococcus, which is a bacterium commonly found in the throat and on the skin. Certain risk factors --such as problems with the lymphatic system and breaks in the skin -- can increase a person's chances of developing cellulitis.