Autosensitivity eczema

Introduction

Introduction to autosensitivity eczema

Autosensitization eczema (autosensitizationeczema), also known as autosensitization dematitis, is a systemic inflammatory response caused by a patient's allergy to a substance produced by irritation of her own eczema. Traditional Chinese medicine refers to wet ulcers, mostly due to the intrinsic heat and humidity, exogenous wind and evil, rheumatic fever and evil spirits, or because of the intolerance of sputum, toxic heat and promote its general.

basic knowledge

The proportion of illness: 0.15%

Susceptible people: no specific population

Mode of infection: non-infectious

Complications: pruritus

Pathogen

Autosensitivity eczema etiology

(1) Causes of the disease

The patient's original skin disease, mostly eczema lesions, after local or inappropriate treatment, local inflammation is exacerbated, exudation or bacterial infection occurs, and then the patient's own skin tissue produced protein or autologous tissue protein combined with purulent The bacterial toxins in the exudate and the chemical substances of the tissues are allergic, and the body exhibits an auto-sensitive state or an auto-eczema state.

(two) pathogenesis

The pathogenesis is still not very clear, some people think that it is caused by antigen-antibody reaction, and the antibody is anti-epidermal cytoplasmic antibody, which belongs to IgG, but most patients do not find autoantibodies, or may be due to antigen-specific T cells instead of antibodies. cause.

Prevention

Autosensitivity eczema prevention

The disease occurs in the summer, and there are multiple allergies. The incidence of infants and young children is higher than that of adults.

1. Remove the cause

(1) Although the cause of eczema is not easy to be clear, we should still ask for a detailed history, conduct necessary systematic examinations, try to find possible causes and remove them.

(2) People with allergies should avoid physical contact with substances that are allergic to them (see sensitizers in the cause) in addition to clothing, food, shelter, etc., as well as physical exercise to improve allergies.

2. Avoid irritating factors Once eczema occurs, as a patient, try to avoid irritating factors, including scratching, boiling water, soaping, drinking and spicy food, so as not to aggravate the condition of eczema.

3. Early diagnosis and early treatment According to the clinical features of eczema, severe itching, pleomorphic damage, tendency to exude, good limbs and easy recurrence, easy to make a diagnosis, tend to densely distributed red papules, herpes With intense itching, it helps early treatment of eczema. Because early eczema is mostly in the acute phase or subacute phase, the principle of external medication should be followed.

Complication

Autosensitivity eczema complications Complications pruritus

Mainly caused by local skin lesions, together with exudation, erosion, pain, etc., some with nearby lymphadenopathy, low heat and other performance, not paying attention to hygiene, scratching, etc. may lead to concurrent bacterial or fungal infections, in addition to common golden yellow grapes In addition to coccidia skin infections, it is rare to be herpes simplex virus infection, phlegm, or infectious plaque. Some children who are allergic to food or something in the environment sometimes aggravate the symptoms of eczema.

Symptom

Autosensitivity Eczema Symptoms Common Symptoms Lymph node swelling, low fever, itching, papules, herpes

Some parts of the patient before the onset, often found in the lower extremities or genital area, such as eczema, 1 to 2 weeks after the eczema of the primary site deteriorates, a systemic rash occurs suddenly, which is a papule or a herpes, and then oozes and smashes. Symmetry distribution, common arm flexion side, hand back, thigh extension side common, further spread the whole body, consciously itching, some cases may have a homomorphic reaction, itching is more, accompanied by burning sensation, accessory lymph node enlargement, even low fever and general malaise, course of disease After the primary damage is reduced, the primary damage is reduced or subsided, and the disease is also reduced or subsided. The short course of disease is about 10 days, and the elderly can be delayed for several months. Otherwise, the damage is aggravated and continues to expand.

Examine

Autosensitivity eczema examination

Autoimmune eczema examination: generally based on clinical symptoms and typical skin lesions can be diagnosed without special examination; if necessary, local secretion examination can be performed to distinguish between rash caused by fungal infection, virus and bacterial infection; Check blood routine, if there is infection, there will be increased white blood cells, autosensitivity eczema may increase the eosinophils in blood routine.

Diagnosis

Diagnosis of autosensitivity eczema

diagnosis

According to the primary lesion before the onset, after improper treatment or secondary infection, followed by the deterioration of the primary lesions and the changes in the herpes and trunk of the limbs and trunk, consciously itching, it is not difficult to make a diagnosis.

Differential diagnosis

It should be differentiated from generalized eczema, coin eczema and herpes-like dermatitis.

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