Impetigo vs Cellulitis: Causes, Symptoms, Differences & Treatment
Impetigo and cellulitis are two common bacterial skin infections. This guide explains their causes, symptoms, differences, and treatment options to help you identify and manage these conditions.
Impetigo is a highly contagious skin infection that affects the superficial (top) layer of the skin. It can be caused by either Group A Streptococcus or Staphylococcus aureus bacteria. Impetigo commonly affects children between the ages of 2 and 5, but it can occur at any age. There are two types of impetigo: nonbullous impetigo and bullous impetigo.
- Nonbullous impetigo begins as clusters of red or discolored itchy sores that typically appear around the mouth and nose. These sores then rupture and develop into thick, honey-colored crusts.
- Bullous impetigo starts as fluid-filled blisters that usually occur on the trunk, between the neck and waist. These blisters quickly enlarge, burst, and become covered with a honey-colored crust.
Cellulitis, on the other hand, is a painful bacterial infection that affects the deeper layers of the skin. It can start suddenly and may become life-threatening without prompt treatment. Mild cases of cellulitis involve a localized infection with redness in one area. More serious cases involve a rapidly spreading infection that can lead to sepsis. The spread of cellulitis depends on the strength of a person's immune system.
Similarities between impetigo and cellulitis include:
- Both impetigo and cellulitis are bacterial infections.
- Both may cause redness and inflammation on the skin.
- Both conditions can be painful.
- Both may lead to complications if not treated promptly.
Differences between impetigo and cellulitis include:
- Impetigo primarily affects the superficial layer of the skin, while cellulitis affects the deeper layers.
- Impetigo is highly contagious and spreads through close contact or contact with personal items of an infected person, while cellulitis is not contagious.
- The appearance of impetigo includes clusters of red or discolored itchy sores that develop into honey-colored crusts, while cellulitis typically presents as localized redness in one area.
- Impetigo commonly affects children between 2 and 5 years old, while cellulitis can affect people of all ages.
Remember, if you suspect you have either impetigo or cellulitis, it's important to consult with a healthcare professional for an accurate diagnosis and appropriate treatment.