What Are Herpes Sores?

Also known as "infectious impetigo", commonly known as "yellow water sores", is a common superficial skin infectious disease that is transmitted through contact. It is characterized by the occurrence of blisters, pustules, and fragile pustules. According to the different clinical manifestations, it is divided into two types of bullous and non-bulous impetigo.

Basic Information

nickname

Infectious impetigo, yellow water sores, impetigo in neonates, impetigo in children

Visiting department

dermatology

Multiple groups

2 to 7 years old

Common causes

Staphylococcus aureus

Common symptoms

Blisters, pustules, fragile pustules

Contagious

Have

way for spreading

Contact spread

Causes of impetigo

Non bullous impetigo is often caused by Staphylococcus aureus and occasionally by group A beta-type hemolytic streptococcus. Bacteria adhere, invade, and cause infection after minor skin trauma. Bullous impetigo is caused by Staphylococcus aureus and can occur in intact skin. This bacterium can produce and release epidermal exfoliative toxin. Epidermal exfoliative toxin binds to desmoglycoside 1 on the cell surface, causing epidermal cell adhesion. Attached loss, cell lysis, bullae formation.

Clinical manifestations of impetigo

The disease is prevalent in summer and autumn, and is more common in children 2 to 7 years old. The clinical manifestations of the two types are as follows:

Bullous impetigo

Occurs on exposed areas such as the face and limbs. It started as a scattered blister. After 1 to 2 days, the blister increased rapidly, the blister changed from clear to turbid, and the pus was deposited at the bottom of the blister. It was a semilunar pus, which is one of the characteristics of this type of impetigo. The blister wall is thin and slack, showing an erosive surface after ulceration, and yellow pustules after drying. Sometimes new blisters occur around the palate, arranged in a ring shape, called ring impetigo. Patients consciously itch and generally have no systemic symptoms.

2. Non bullous impetigo

Occurs on the face, around the mouth, around the nostrils, ears, and exposed parts of the limbs. It manifests as a thin-walled blister on the basis of erythema, which quickly turns into a pustule, with obvious redness around it. After the pustule is broken, the pus is dried and formed into a thick honey-colored palate. The palate continues to expand around and can fuse with each other. Conscious itching, often inoculating bacteria to other parts due to scratching, new rashes occur. The scabs healed off about a week and healed without scars. Severe patients may be complicated by lymphadenitis and fever.

Impetigo examination

Staphylococcus aureus or hemolytic streptococcus can be isolated and cultured in pus and pus. Histopathological examination of the skin lesions indicated that pustules formed between the stratum corneum and the granular layer, and the pustules contained a large number of neutrophils, fibrin, and cocci.

Impetigo diagnosis

According to typical clinical manifestations, diagnosis is not difficult. If necessary, improve the culture of pus bacteria and histopathological examination to help confirm the diagnosis. It should be distinguished from pimples urticaria and chicken pox.

Impetigo treatment

System treatment

Patients with extensive skin lesions or accompanied by fever and lymphadenitis should use sensitive antibiotics systematically and choose according to the results of drug sensitivity.

Local treatment

After the blisters or pustules are locally disinfected, the blister fluid is aspirated and applied with neomycin ointment, mupirocin ointment or fusidic acid ointment.

Impetigo prevention

Pay attention to personal hygiene and keep your skin clean. Patients should be properly isolated, and clothing, towels, and utensils they have touched should be disinfected.