Blister

Introduction Blisters, that is, blister, are the internal fluid-filled bubbles that appear locally on the surface of the skin. The long-term friction causes the permeability of some capillaries to increase, and some plasma proteins enter the tissue fluid, which causes the osmotic pressure of the tissue fluid to increase, and the tissue fluid increases. It is a blisters that vary in size. In the summer, some people's skin is exposed, and they may be burnt by boiling water, oil, chemicals, etc. if they are not careful. To deal with the blisters after the burn, the water in the blisters can be drained from the low position, and the wounds can be washed with natural water for more than half an hour. After burns, people should use sterile pinholes, scissors, etc., puncture the blisters from the low blisters, and let the water inside out, because the blisters are rich in inflammatory substances, which are easy to cause infection. However, when draining, be careful not to pick the skin outside the blisters, because the intact skin is the barrier against the invasion of bacteria. Once it is broken, the bacteria will invade quickly and infection will occur.

Cause

Blisters occur because the skin is damaged by some kind of damage, such as abrasions, burns, burns, etc. The body protects the underlying skin from damage and ensures a smooth response to the skin. Under normal circumstances, in the process of regeneration of the underlying skin, the liquid in the blisters will be gradually absorbed by the body, and the skin of the blisters will gradually dry and eventually fall off. At this point, the new skin will become the outer skin. In the process, if the blisters are broken, the inner layer of the skin is likely to be infected by bacteria, which may cause trouble to the child.

an examination

Related inspection

Bacteriological test

Diagnosis can be based on clinical symptoms.

Large blisters appear on the skin and mucous membranes with normal appearance, and there is exfoliation of the epidermis, which occurs in the wrinkles of the skin, and more common in middle-aged people.

The liquid in the blisters is the tissue fluid. Long-term friction causes the permeability of some capillaries to increase, and some plasma proteins enter the tissue fluid, which in turn leads to an increase in the osmotic pressure of the tissue fluid and an increase in the tissue fluid.

Differential diagnosis

Differential diagnosis of blisters:

(A) impetigo: occurs in the around the nasolabial or exposed parts of the limbs, as herpes, followed by pustules, and then scarring, no batch appearance, not seen in the mucosa, no systemic symptoms.

(B) papular-like urticaria: a fusiform edematous red papule, such as the size of peanuts, the center has a tip or miliary size of herpes or blisters, which is hard and itchy. Spread over the limbs or torso, not involving the head or mouth, not scarred.

(3) Herpes zoster: Herpes is distributed along a certain nerve trunk path, asymmetrical, no more than the midline of the trunk, and there is significant burning pain in the local area.

(4) Smallpox: Severe chickenpox is similar to light ceiling.

(5) Other viral infections: Herpes simplex virus infection can also cause varicella-like skin lesions. This type of disseminated herpes simplex virus infection is often secondary to skin diseases such as atopic dermatitis or eczema. The diagnosis depends on the results of virus isolation. In recent years, it has been found that enteroviruses, especially Coxsackievirus A, can cause a wide range of varicella-like rashes, usually occurring in the late summer and early autumn when the enterovirus is high, often accompanied by pharyngeal, palm and plantar skin lesions. This contributes to the identification of chickenpox and enterovirus infection.

(6) Varicella (varicella): is a primary infection caused by varicella-zoster virus. It is characterized by mild systemic symptoms and rash, papules, blisters and pimples on the skin and mucous membranes. Infectious skin disease. More common in children, it is highly contagious, easy to cause a small area of prevalence, and can be immunized for life.

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