vegetable dermatitis
Introduction
Introduction to vegetable dermatitis Vegetable-farmer's dermatitis refers to a kind of dermatitis that occurs during the process of vegetable cultivation, cultivation, and picking. basic knowledge The proportion of illness: 0.02% Susceptible people: no special people Mode of infection: non-infectious Complications: dermatitis
Cause
Causes of vegetable dermatitis
Cause:
In the process of vegetable cultivation, cultivation, and picking, the farmers who specialize in vegetable production suffer from immersed erosive rice field dermatitis due to the long-term immersion of water on the two feet of the irrigation, coupled with high water temperature and mechanical friction during labor generation; Inhalation of certain vegetable pollen (such as green vegetables, cabbage, indigo pollen) caused by hay fever caused by sensitization; contact with certain light-sensitive vegetables (such as picking celery) due to photosensitivity reaction photoreceptive dermatitis.
Prevention
Vegetable dermatitis prevention
Strengthen labor protection and strengthen personal protection, including wearing long rubber gloves, long boots, long aprons, protective glasses, masks, etc.
Complication
Vegetable dermatitis complications Complications dermatitis
The symptoms of the disease are light and heavy, and severe cases may be secondary to folliculitis and lymphitis. Persistent rubbing of the ankle or upper back can cause starchy material to deposit in the dermis, which in turn develops plaque and bryophyte-like disease. Complicated with edema, erythema, erosion, may have herpes or pustules. It can also be secondary to infection; it occurs after exposure to sunlight. There are erythema and edema, and in severe cases, there may be blisters and bullae. Consciously burning pain.
Symptom
Symptoms of vegetable skin symptoms Common symptoms Herpes sneezing, itchy pustules, itching, clearing, secondary infection, edema, blistering or bullous damage
More common in farmers engaged in vegetable cultivation, divided into the following three types:
1. Impregnated erosive rice dermatitis: skin lesions mainly occur in the foot, light, the skin between the toes is impregnated and white, due to friction can reveal red erosion surface; heavy foot and its sides, heel also edema, erythema , erosion, may have herpes or pustules, but also secondary infections, conscious pruritus and pain, the length of the disease is different, lighter, suspend the field for 2 to 3 days to improve, secondary infection, the course of disease is longer.
2. Photosensitive dermatitis: occurs in exposed parts such as hands and face, exposed to certain photosensive vegetables (such as picking celery), occurs after sun exposure, erythema, edema, severe blisters, bullae, conscious burning pain.
3. Hay fever: After long-term inhalation of certain vegetable pollen (such as green vegetables, cabbage, indigo pollen), it often appears in a few minutes of itchy eyes, itchy nose, sneezing, sputum, and other symptoms, contact with pollen for nose The mucosal challenge test was positive, and the pollen saline was positive for the skin challenge test.
Examine
Vegetable dermatitis examination
Laboratory inspection
1. Hematology and serology to examine peripheral blood eosinophilia. T lymphocytes (especially Ts) are reduced. Serum IgE levels were significantly increased.
2. Skin tests are often positive for allergic reactions to certain allergens (eg fungi, pollen, shavings). Contact with pollen for positive test of nasal mucosa. Intradermal test (delayed allergic reaction) with tuberculin, candida, etc., often negative or weakly positive.
3. Skin white scratch test The skin is scratched with a blunt instrument, and the skin has white scratches (normal people are red). Pollen saline was positive for skin rupture test.
Diagnosis
Diagnosis and identification of vegetable dermatitis
According to clinical characteristics, medical history, occupational characteristics and examination are not difficult to diagnose.
The disease needs to be differentiated from contact dermatitis and niacin deficiency. Contact dermatitis: A history of exposure to irritants, which can occur in any season, and the rash occurs at the site of contact and is consciously itchy. Niacin deficiency: In addition to sun exposure, there are also rashes on non-exposed areas, often accompanied by symptoms of the nervous system and digestive system. In the pathogenesis of dermatitis, there is a history of exposure to test factors to confirm the diagnosis. Because the sensitization factor may not be within the scope of the test, the negative patch test can not rule out the diagnosis of vegetable dermatitis.
