blastomycosis-like pyoderma
Introduction
Introduction to bud-like pyoderma Bacillosis-like pyoderma is a rare chronic tissue proliferative pyoderma that is secondary to bacterial infection of the skin. The clinical manifestations are similar to blastomycosis. Common in malnutrition, chronic alcoholism and other immune dysfunction. Skin lesions often occur in the trauma, but new lesions can occur in the normal area later. The damage can gradually expand to the surrounding area, and the annular plaque is formed, and its edge is high in the shape of a scorpion, and there is a thick sputum on it. After the removal, many abscesses are seen, and pus is exuded. After the center healed, leaving scars. The appearance is similar to geranosis, and the pus has a foul odor, which is different from true germination, mostly single. basic knowledge The proportion of illness: 0.005% Susceptible people: no special people Mode of infection: non-infectious Complications: sepsis, scarlet fever, glomerulonephritis
Cause
Causes of bacillary disease-like pyoderma
(1) Causes of the disease
This disease is due to the abnormal reaction of the body against Staphylococcus aureus, hemolytic streptococcus or Pseudomonas aeruginosa infection.
(two) pathogenesis
Daniel Zu and others believe that the body's immunity is low, and there is an abnormal tissue reaction to the decline of bacterial defense ability. However, it has also been found that the patient is generally in good condition and there is no obvious manifestation of low immune function.
Prevention
Bacillosis-like pyoderma prevention
In the units prone to pyoderma (such as some factories, agricultural machinery stations, primary schools, etc.), publicity and education on the prevention and treatment of purulent skin diseases are widely carried out, and preventive inspections are carried out regularly to eliminate all pathogenic factors as much as possible.
Complication
Bacterial disease-like pyoderma complication Complications sepsis scarlet fever glomerulonephritis
Sepsis can form if the infection penetrates into the blood circulation. At the same time, infection can accumulate in multiple organs, and S. aureus infection can cause suppurative changes in other tissues. Streptococcal infection can cause scarlet fever and glomerulonephritis.
Symptom
Symptoms of sclerotium -like pyoderma Common symptoms Red spot (clear boundary... abscess purulent secretion crusted ring granuloma
Skin lesions often occur in the trauma, but in the future, new damage can occur in the normal part, and the damage can gradually expand to the surrounding area, forming a ring-shaped plaque, the edge of which is high in shape and thick, and after removal, It can be seen that there are many abscesses, pus exudation, and the center is healed, leaving scars. The appearance is similar to bud bacteriosis, and the pus has stench. This is different from true germination, mostly single.
Examine
Examination of bud-like pyoderma
Histopathology: The epidermis is pseudoepithelial-like hyperplasia, lymphocytes and neutrophils are transferred into the epidermis, granuloma is seen in the dermis, and there are more neutrophils and lymphocytes infiltrating.
Diagnosis
Diagnosis and identification of germination-like pyoderma
Diagnostic criteria:
1. It is a large sputum plaque with purulent secretion on the surface and a raised edge.
2. The pathological tissue is pseudoepithelial neoplasia.
3. Culture at least one pathogenic bacteria, such as Staphylococcus aureus, hemolytic streptococcus or Pseudomonas aeruginosa.
4. Deep fungi, atypical mycobacteria and Mycobacterium tuberculosis culture were negative.
5. The fungal serum test was negative.
It is distinguished from true blastomycosis.
