The Bullous impetigo is caused only by the bacteria Staphylococcus aureus, which is capable of producing toxins that cause detachment of the epidermis favoring the appearance of blisters.
Bullous impetigo typically affects the upper and lower limbs , buttocks and trunk more frequently than the common impetigo. The bullous impetigo does not usually affect the face.
The initial lesion of bullous impetigo is equal to the common impetigo, with small papules, which, however, are changing rapidly for bubbles with yellowish content. The skin around the blisters is usually red and itchy. As in common impetigo, bullous impetigo lesions usually do not cause pain.
The blisters usually break up leaving a reddish-yellow crust, which is usually larger and more lasting than in the common impetigo. In bullous impetigo there may be fever and other symptoms of infection, such as malaise and loss of appetite.
The lesions usually heal well without consequences
Treatment : general supportive measures , fluid therapy , antibiotics of choice are penicillinase resistant penicillin such as cloxacillin or dicloxacillin with good prognosis .