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.
Skin injuries such as cuts, insect bites, or surgical incisions are commonly the sites of the infection. Certain factors also increase your risk of developing cellulitis. Common risk factors include: 1  a weakened immune system.  skin conditions that cause breaks in the skin, such as eczema and athleteâs foot.