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.
The redness and swelling often spread rapidly. Cellulitis is usually painful. In most cases, the skin on the lower legs is affected, although the infection can occur anywhere on your body or face. Cellulitis usually affects the surface of your skin, but it may also affect the underlying tissues of your skin. Cellulitis can also spread to your lymph nodes and bloodstream.