paint dermatitis
Introduction
Introduction to paint dermatitis Paint dermatitis, also known as rheus dermatitis (rhusdermatitis) or lacquer dermatitis, is an acute dermatitis caused by contact with lacquer trees and natural lacquer. Folks call paint scorpions, paint bites, Chinese medicine called paint sores, also known as wet poisonous ulcers. basic knowledge The proportion of illness: 0.001% Susceptible people: no special people Mode of infection: non-infectious Complications: headache, constipation
Cause
Causes of paint dermatitis
Environmental factors (85%):
Direct contact or indirect contact with paint articles, due to auto-sensing and cause inflammation of the body, the main component of the paint is urushiol, 0.001mg of lacquer phenol can cause dermatitis in patients.
Body factor (15%):
Lacquer dermatitis is a type IV delayed allergic reaction. In addition, lacquer is highly sensitizing and irritating. Chinese medicine believes that endowment is not tolerant, fur is not dense, and it is poisoned by heat. The heat is on the skin and it develops.
Prevention
Paint dermatitis prevention
1. Strengthen the publicity and education on the prevention and treatment of lacquer dermatitis, and eliminate the fear of lacquer dermatitis.
2. Avoid direct contact with paint, paint, lacquered wood and new paint without drying the lacquer.
3. Keep the working environment clean and tidy, and the workshop should be well ventilated to avoid paint contamination.
4. Wear protective clothing, gloves, and wash hands when working, apply protective ointment as appropriate (see Occupational Skin Disease Protective Ointment), use soapy water (do not use alkaline too much soap) or licorice mulberry leaves after work. Wash hands (licorice, winter mulberry leaves 30g, add water 3000ml, water decoction), such as skin staining paint, you can use 95% alcohol or 0.5% ~ 10% potassium carbonate solution or with caustic potash 10ml, alcohol 300ml, glycerin 100ml, water 60ml is prepared into a solution, then washed with soap and water to prevent or reduce the occurrence of dermatitis. In addition, use 2% potassium permanganate solution to clean the surface of the lacquer or add 0.6% potassium permanganate directly to the large paint. Reduce the allergenicity of the paint.
Complication
Paint dermatitis complications Complications, headache, constipation
The dermatitis type can be accompanied by headache, fever, loss of appetite, constipation, palpitations and other systemic symptoms.
Symptom
Symptoms of dermatitis symptoms Common symptoms Herpes herpes herpes lymphadenopathy Skin infiltration secondary infection Itching appetite heartless constipation
After the contact, it usually takes several hours to one day, and the elderly can reach 2 weeks. It is acutely affected. The affected part is mostly exposed. The face, neck, wrist joints, back of the hand, and back of the fingers are many. To the genital (penis, scrotum), chest, abdomen, waist, limbs (more common in the lower leg) and other parts, the back and palm of the hand less, local manifestations can be divided into dermatitis and urticaria.
Dermatitis type:
Light and heavy, generally local first itching, with the most dense needles to the miliary size red papules, with varying degrees of redness, then papules can quickly become blister or bullae, blister wall tension, blister clarification, tendency After the blister breaks, it has a bright red smashed surface, and there is a large amount of serous oozing. After drying, it forms a yellow pulp. The severe part of the affected area is red and swollen, especially in the face and genital area, often causing eye cracks to become smaller. There are headaches, fever, loss of appetite, constipation, palpitations and other systemic symptoms. The light is mostly around the wrist, the finger joints, the back of the hand or the forearm are swollen and swollen, and there are most dense small papules or a few blisters.
Urticaria type:
Generally, there is no acute inflammation in the local area, only itching is felt. Because of the whealing of the wheal of different sizes, the regression is slightly delayed and there is obvious skin scratching.
Examine
Inspection of paint dermatitis
Check the items in accordance with the actual situation of the patient.
Diagnosis
Diagnosis and identification of paint dermatitis
The disease is acute, and after a short period of time, if it is properly treated after treatment, it can be cured within a few days to 1-2 weeks, but if it can not be completely disengaged or due to collar, sleeves, and pants, the friction can be prolonged. Or even evolved into subacute or chronic inflammation, skin infiltration and hypertrophy, long-term unhealed, secondary infection in the passage, pustular purulent lesions, local inflammation, and even associated lymphadenopathy.
First of all, there is contact with lacquer or lacquer wood, paint liquid, lacquerware and other history before the onset. There is a history of allergy to paint, acute onset, location of the disease and acute inflammatory damage. It is generally not difficult to diagnose.
Differential diagnosis should be distinguished from acute eczema and acute urticaria. The latter lacks a clear history of exposure and previous history. The disease is stopped when it is stopped, and the latter often recurs. The cause is difficult to trace.
