Impetigo Contagiosa

Impetigo Contagiosa
Body Parts: Head Limbs
Medical Subjects: Skin

What Is Infectious Pustulosis

What is infectious pustulosis?

Infectious pustulosis is one of the most common acute suppurative skin diseases with high infectivity caused by superficial infection with Pseudomonas aeruginosa.

It is the most common type of impetigo, accounting for about 70%, and is transmitted by contact (including contact with patients or their contaminants), spreading rapidly and can be prevalent in children.


What Is The Cause Of Infectious Pustulosis

What causes infectious pustulosis?

Most studies have found that 50% to 70% of patients are caused by S. aureus infection, while the rest are caused by S. pyogenes or a combination of the two.

Streptococcus is often the early pathogenic bacteria, on the basis of which secondary staphylococcal infection. In addition, age, damaged skin, low immunity, environmental factors (such as hot and humid) will increase the risk of infection.


What Symptom Does Infectious Pustulosis Have

What are the main symptoms and manifestations of infectious pustulosis?

  • Thin-walled blisters developed on the basis of erythema, rapidly transforming into pustules with a distinct flush around them;
  • After the pustule is broken, thin, straw-colored, serous purulent secretion can be seen. After the exudate is dried, a loose and layered golden scab is formed, and the layers are covered to form a thick fragile scab.
  • The crust is usually easily removed, leaving a smooth, red, damp surface, and punctuate fresh exudation that accumulates again soon.

How To Check For Infectious Pustulosis

How should infectious pustulosis be diagnosed?

It is not difficult to diagnose according to its history and clinical manifestations, and bacteriological examination of blister fluid and pus crust is necessary.

Sometimes need to distinguish with papular urticaria, chickenpox:

The former is papule or blister on wheal-like erythema with repeated attack and odd itching;

The latter is often accompanied by fever, and the rash is distributed concentrically. The blisters are mainly the size of mung bean to soybean, and may have navel-shaped depression. At the same time, rash, papule, blister and scab can be seen in all stages of the rash, commonly known as the phenomenon of "four generations living together".


How To Prevent Infectious Pustulosis

How should infectious pustulosis be prevented?

Pay attention to personal hygiene, keep the skin dry and clean, timely treatment of various itchy skin diseases, to prevent a variety of skin damage; Patients should be properly isolated, especially the collective units, patients with contact with the towel, clothes and utensils should be disinfected.

For high-risk children in nurseries, the application of antibiotic ointment to the damaged skin can prevent the occurrence of pustulosis.


How To Treat Infectious Pustulosis

How should infectious pustulosis treat?

External drug treatment is dominant, and patients with extensive skin lesions or severe illness can be supplemented by systemic drug treatment. The principle of external drug treatment is to kill bacteria, diminish inflammation and dry.

Pustules not broken can be used for external use 10% calamine lotion, pustules larger should extract blister fluid, try to avoid blister fluid overflow to the normal skin.

For patients with bullous fluid rupture, 1:5000 potassium permanganate solution or 0.5% neomycin solution could be used for cleaning and wet dressing, followed by external application of mupirocin ointment or neomycin ointment, kanamycin ointment and fusidic acid ointment.

Patients with extensive skin lesions, severe systemic symptoms, or weak infants should use antibiotics in time, and staphylococcus aureus-sensitive antibiotics can be selected, and drugs should be selected according to drug sensitivity test when necessary.

At the same time, attention should be paid to the balance of water and electrolyte, and plasma or human blood gamma globulin can be infused if necessary.

In addition, in view of the possibility of pneumococcal impetigo nephritis, the systematic application of antibiotics should be paid attention to, especially when the bacterial culture is identified as streptococcal infection, the systematic application of antibiotics should be adopted.

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