Generally divided into vulgaris, and bullous. In addition, there are some special types.
(A) also known as impetigo vulgaris contagious impetigo, often for the S. aureus infection or mixed infection with hemolytic streptococcus. Contagious, often in nurseries, kindergartens has caused epidemic. Lesions occur in the face, scalp and limbs, face to mouth weeks, nostrils near the ear mainly severe cases can be generalized body.
(B) bullous impetigo, mainly by phage group II Staphylococcus aureus caused 71. More common in children. Good hair on face, trunk and limbs, but also found in palmoplantar.
Of this type occur in the newborn, also known as neonatal impetigo. Mainly in the 3 months after birth, infectious, easy to pop in neonates. Rapid-onset, pus cell rapid progress, and soon involving the whole body. Often accompanied by high fever above 39 ℃, the spirit of apathetic children, vomiting, diarrhea. If not timely treatment may be due to sepsis or sepsis and life-threatening.
In addition, there are two kinds of special types of impetigo:
1. Staphylococcal scalded skin syndrome by the coagulase-positive Staphylococcus aureus phage II group of 71 infants due to epidermal acanthosis acute necrosis of the severe form of skin infection, also known as neonatal exfoliative dermatitis, and Staphylococcus aureus of the toxic epidermal necrolysis.
2. Deep impetigo, also known Ecthyma. Caused by beta-hemolytic streptococcus, and sometimes mixed infection with Staphylococcus aureus. This disease is particularly prevalent in malnourished children or the elderly, and good fat in the leg and buttocks.