Impetigo is a common acute purulent skin disease, commonly known as “yellow sores”. It is infectious by contact and autoinoculation and is easily prevalent in children. The pathogenic bacteria are mainly Staphylococcus aureus or Streptococcus hemolyticus type B, either alone or in combination. High temperatures, high humidity and skin impregnation in summer and autumn make it easy for germs to invade the skin and multiply, creating favorable conditions for the development of the disease. The causes of acne vulgaris are Staphylococcus aureus (50%-70%), followed by Streptococcus hemolyticus B. The two can also be mixed. When the temperature is high, sweating is high and the skin is macerated, the bacteria can multiply locally; when the patient has pruritic skin disease, itching can destroy the skin barrier and facilitate bacterial colonization. The disease can be transmitted by close contact or by self-inoculation. The bacteria mainly invade the epidermis and cause purulent inflammation; coagulase-positive phage 2 group 71 Staphylococcus aureus can produce epidermolysin, causing toxemia and generalized epidermolysis bullosa necrosis; in patients with low resistance, the bacteria can enter the blood and cause bacteremia or sepsis; a few patients can induce nephritis or rheumatic fever. Acne vulgaris symptoms Acne vulgaris is known as an infectious disease called pustular rash, or yellow water sores, and is one of the most common infectious skin diseases of septicococci. The disease can be divided into two types: 1. Impetigo maculans: caused by Staphylococcus aureus. The onset of the disease is rapid, starting with small scattered blisters, which soon expand and become pustules or purulent blisters. The walls of the blisters are relatively loose and appear to be wrinkled. The pus within the blister is often deposited at the bottom or lower half of the blister, which is half-moon shaped. The wall of the blister is very thin and easily breaks down to reveal the pus, which forms a yellow pus scab after drying. Sometimes the pus under the scab overflows to the surrounding area, and new blisters and pustules occur in the surrounding area, arranged in a ring or arc, also known as ring-shaped impetigo. It occurs on the face, head, extremities and other exposed parts of the body, and itches spontaneously, usually without systemic symptoms. It occurs mostly in children aged 2 to 8 years old, and is most likely to occur on exposed areas, such as the head, face and limbs, but can also spread to the whole body. It is itchy, so after scratching, it is easy to self-infection and spread to the surrounding. 2. Pustular impetigo: caused by Streptococcus haemolyticus or mixed infection with Staphylococcus aureus. It is characterized by the occurrence of thin-walled blisters on the basis of erythema, which rapidly transform into pustules surrounded by an obvious red halo. This type is most commonly found on the face, especially around the mouth, nostrils and auricles, and also on the extremities. Because of the pronounced itching, new rashes often occur as a result of scratching and inoculation of bacteria to other areas. The old crusts usually fall off naturally in 6 to 10 days and heal without leaving scars. On the basis of erythema, blisters appear, which quickly turn into pustules with sticky pus and obvious surrounding inflammatory redness, and after drying, thick honey-yellow scabs are formed, which heal in about a week without leaving scars. Differentiation from other skin diseases The diagnosis of neonatal pustulosis can be made based on the characteristics of large pustules followed by systemic symptoms, but it should be differentiated from the following diseases: 1. Golden grape scald-like skin syndrome may be a severe type of this disease. It has an acute onset, severe systemic symptoms, and lesions that are mainly large blisters with positive Ney’s sign and significant exfoliation, without large pustular damage. 2, hereditary herpetic epidermolysis bullosa blisters mostly occur in the hands, feet and other areas susceptible to trauma and friction, the content of large blisters is clarified, often with a family history. Chinese medicine treatment 1, internal treatment method: the symptoms see pustules surrounded by inflammatory redness, broken erosion crust, may be accompanied by fever, thirst, dullness, dry urine, red tongue, thin yellow coating, smooth pulse. The symptoms belong to damp heat in the lung and stomach and external poisonous evil. 2. Internal treatment: hormone-free herbal treatment.