What infection occurs in the tissues just beneath the skin?

Cellulitis is an infection that occurs in the deeper layers of the skin, specifically in the tissues just beneath the skin. It is typically caused by bacteria, most commonly streptococci and staphylococci. This condition is characterized by redness, swelling, warmth, and pain in the affected area, and can also lead to systemic symptoms like fever if the infection spreads.

The importance of recognizing cellulitis lies in its potential complications if not treated promptly, as it can lead to severe systemic infections and other complications. This highlights the necessity for appropriate medical management, often including antibiotics, to effectively address the underlying infection and prevent escalation.

While dermatitis refers to inflammation of the skin which can be caused by various factors such as allergens or irritants, cellulitis specifically refers to a bacterial infection. An abscess is a localized collection of pus that can occur in various tissues including the skin, but it is not solely characterized by inflammation of the underlying tissue as cellulitis is. Impetigo is a superficial skin infection often affecting children, typically appearing as crusty sores, but it involves the outer layers of the skin rather than the deeper tissues where cellulitis occurs.