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 a bacterial infection of the deeper layers of the skin, the dermis, and the subcutaneous tissue. This is a very common skin infection. Most cases of cellulitis are easy to treat if caught early. The longer you wait to get treatment, the more damage the bacteria can do to the skin.