Pustule

Introduction After the skin soft tissue infection is purulent, a swollen bag formed in the epidermis contains pus. Can appear on people or animals. Pustules refer to the cavity formed under the epidermis or epidermis, and the contents are herpes of pus. Most pustules are defensive inflammatory reactions caused by purulent bacterial infections, and some pustules are sterilized (related to toxic irritation, allergic reactions, etc.). The hair follicle sebaceous glands are blocked and do not communicate with the outside world. First, whitehead acne is formed, and the surface is like a slightly protruding whitehead. When the whiteheads are worsened, papules will form, and the papules will become more inflamed and intensify, and pustules will form.

Cause

Skin and soft tissue infections: including folliculitis, sputum, sputum, lymphangitis, acute cellulitis, burn wound infection, postoperative incision infection and acne infection.

The mechanism of pustules varies with the cause. The cause of impetigo in some diseases remains unclear. However, a large number of white blood cells exist in the pustule cavity.

Viral acne-like pustules are infected by different viruses through droplets or contact infections, and after a series of immune reactions, epidermal or subepidermal pustules occur. Typical changes can cause reticular and balloon-like degeneration of the epidermis, as well as inclusion bodies of different viruses.

infection

Bacterial infections are mostly caused by staphylococcal and streptococcal infections. The route of infection is primary infection and secondary infection. The primary infection is a pustule caused by the direct invasion of the pathogenic bacteria into the skin. Such as infectious impetigo, its pathogenesis pathogen plays a major role. Secondary infections occur on the basis of the original lesions. It is usually a mixed infection of various bacteria, such as infectious eczema-like dermatitis. The causative factor causing bacterial pustules, the pathogens multiply on the skin or contact with strains with strong external virulence, and the damage of the epidermis makes the pathogens easy to invade. Pediatric skin is thin and tender and resistant to infection. Metabolic disorders, malnutrition, fatigue or susceptibility to certain immune dysfunction.

Non-infectious rashes are aseptic pustules. The general cause is still unclear, such as herpes-like impetigo, pustular psoriasis. It is believed to be related to factors such as focal infection, endocrine disorders, and immune dysfunction.

an examination

Related inspection

Pus and wound infection specimens bacteriological examination blood routine

1. Carefully ask the relevant medical history and collect relevant clinical data.

2. Closely check the patient, clearly understand the clinical symptoms of the patient, and pay close attention to the pustule.

3, appropriate physical examination of the patient, a preliminary understanding of the morphological changes of the various organs of the patient.

4, the relevant device examination of the patient, appropriate laboratory examination, pus in the pustule is generally checked.

5, comprehensive consideration of various inspection results, combined with the clinical symptoms of various organ damage, and finally draw a corresponding diagnosis.

Differential diagnosis

Fiber membrane wrap: Commonly found in "abdominal hernia", named in 1978, is a relatively rare disease in abdominal surgery. It is characterized by all or part of the small intestine being covered by a dense, gray-white, tough, hard and thick fibrous membrane. Because of its different causes, clinical manifestations are different, and the understanding is also inconsistent. It has been reported as "small intestinal silkworm encapsulation, congenital small intestine imprisonment, small intestine stage fiber encapsulation, and intracapsular adhesive intestinal obstruction".

Pustular acne: Pustular acne is a type of acne. Puss is the main expression, pustules are the size of grain to mung bean, pustules are formed at the tip of follicular pustules and papules, and the pus is thicker after the break, leaving a shallow scar.

The pelvic mass is often one of the main complaints for gynecological patients, and it is also a common sign of gynecological pelvic examination. Most of the pelvic masses come from the female genitalia, and the mass can be found by the patient or his family inadvertently. It can also be found when the pelvic examination is performed because of other symptoms such as pain and dysuria.

Pelvic abscess: Most of the acute pelvic connective tissue inflammation has not been treated in time, and the suppuration forms a pelvic abscess. This abscess can be confined to one or both sides of the uterus, and the pus flows into the deep pelvic cavity. The symptoms continued to deteriorate, and there was a relaxation-type hyperthermia. The peritoneal irritation was more pronounced. There were rectal and bladder irritation such as rectal pressure, defecation and dysuria, and symptoms of systemic poisoning. Double diagnosis and anal examination showed that the pelvic cavity was full, and the rectal uterus was thickened, hard or undulating, accompanied by obvious tenderness.

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