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Home Disease Index Impetigo

IMPETIGO


Overview

Causes
Symptoms
Therapy
Risk Factor

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Overview

 

Impetigo is a skin disorder caused by bacterial infection and characterized by crusting skin lesions.



Causes

 

Impetigo is a common skin infection. It is most common in children, particularly children in unhealthy living conditions. In adults, it may follow other skin disorders. Impetigo may follow a recent upper respiratory infection such as a cold or other viral infection. It is similar to cellulitis, but is more superficial, involving infection of the top layers of the skin with streptococcus (strep), staphylococcus (staph), or both.

 



Symptoms

 
  • Skin lesion on the face/ lips, or on the arms or legs, spreading to other areas. Typically this lesion begins as a cluster of tiny blisters which burst, followed by oozing and the formation of a thick honey or brown colored crust that is firmly stuck to the skin.
  • Itching blister:
    Filled with yellow or honey-colored fluid
    Oozing and crusting over
  • Rash (may begin as a single spot, but if child digs at it, it may spread to other areas).
  • In infants, a single or possibly multiple blisters filled with pus, easy to pop and when broken leave a reddish raw-looking base.
  • Lymphadenopathy -- local lymph nodes near the infection may be swollen.

 

Risk Factors

 

Impetigo begins as an itchy, red sore that blisters, oozes and finally becomes covered with a tightly adherent crust. It tends to grow and spread. Impetigo is contagious. The infection is carried in the fluid that oozes from the blisters. Rarely, impetigo may form deeper skin ulcers.

 


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