Cellulitis pathophysiology

Microorganisms gain access into the layers of the skin through the discontinuities. Body responds to these microbes as a foreign elements in its system and causes an inflammatory response. This leads to redness, swelling, pain and itching of the area involved. It is a local infection leading to inflammation of the area. With competent immune system , it limits the spread of the infection. If immune system fails to curb the infection it gets systemic by spreading into the adjacent areas finally entering the blood stream.