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Ultraviolet allergy symptoms and maintenance method
Allergy is because the sun's UVA and UVB rays penetrate the two sex direct skin dermis, make people allergic constitution irradiated area skin redness, burning, heat, pain. At the same time, the ultraviolet allergy can also lead to "health killer" - free radicals in the body has increased dramatically, make local skin wrinkles, pigmentation, cell damage, can change the immune system, even cause more serious toxicity and light light allergic reactions.
define
Ultraviolet allergy is applied to human body caused by abnormal daylight abnormal sexual response; Light of abnormal sexual response is a kind of immune response, as long as there is a small amount of light material in the human body, the ultraviolet irradiation reaction will happen, show the side of the face, neck, forearm stretch, back and other exposed parts appears erythema, papules, wind group sample or blister, such as skin rash, after sun exposure, skin lesions significantly increased, itch. Rash often break out repeatedly, moss samples change can be, pigment increased. In spring, summer, autumn season when symptoms especially serious; Also called solar dermatitis.
Summer after the sun insolates, neck, face, arm, shoulder and other exposed skin appears erythema, blister, etc., fire, itch, erythema and edema faded, a few days following the desquamation, molting, and temporary pigmentation. This process is under the skin is basked in strong sunlight of acute traumatic reaction, namely insolation injury, after repeated insolation injury, also can form the skin is sensitive to light, after, again by the sunlight, the produced photosensitive dermatitis (sun) reaction. According to the disease of traditional Chinese medicine for sun boils, poison evil invade the body, the heat accumulate depressive skin, burning the skin and muscle and causes; If the poison inside heat wet or hot clip and wet stroke knot, immerse the skin, swelling, blisters, will appear after erosion, seepage;
Ultraviolet allergy symptoms
The pathological
Ultraviolet allergy: both UVA and UVB rays of sunlight penetrating the ultraviolet ray, can direct the skin dermis, make people allergic constitution irradiated areas of skin redness, burning, heat, pain, it is often said that sunlight dermatitis on medicine namely ultraviolet allergy; At the same time, the ultraviolet (uv) radiation can also lead to "health killer" - free radicals in the body has increased dramatically, make local skin wrinkles, pigmentation, cell damage, can change the immune system, even cause more serious toxicity and light light allergic reactions.
Conventional uv protective measures including the use of sunscreen and uv protection umbrella, sunscreen use block only a part of UVA and UVB rays are not very useful, and uv protection umbrella on the ground and metope reflection to ultraviolet ray is weak. The expert points out: solar dermatitis, ultraviolet allergy have to cure.
People in the sun exposure can cause skin allergic reaction, not only and cause skin cancer risk is larger than usual, too. Too much of the sun cause skin damage and even skin cancer is an indisputable fact. Skin cancer in the west accounted for more than 50% of cancer patients, the patients with skin cancer in the world is on the rise. Now people use sunscreen, sunscreen or suntan lotion to isolate uv protect skin can have some effect.
symptoms
Symptoms of skin allergies is itching by sunlight, the longer in the sun insolates, allergic reactions, the more severe, itchy skin will last 24 hours to 48 hours, or even longer.
Ultraviolet ray in sunshine can lead to cataracts, due to sun damage to the eyes in the short-to-medium term not easily perceived by patients, so the potential threat should not be ignored for it.
The differential diagnosis of cosmetics allergy and ultraviolet allergy
Ultraviolet allergy symptoms
Ultraviolet allergy symptoms are the part of the sun appears itching, exposure in the sun, the longer an allergic reaction, the more severe, itchy skin will last 24 hours to 48 hours, or even longer. Ultraviolet ray in sunshine can lead to cataracts, due to sun damage to the eyes in the short-to-medium term not easily perceived by patients, so the potential threat should not be ignored for it.
After the skin by solar ultraviolet radiation, on exposed parts such as the face, neck, back and rash. According to the weight once divided into ultraviolet allergy skin reaction and second ultraviolet allergy.
Once ultraviolet allergy to local skin after sun appeared diffuse erythema.
Second after ultraviolet allergy to local skin irritation, which in turn blisters even bulla, blister wall tension, blister fluid to pale yellow. Have burning pain or tickling feeling self-conscious symptom. Blister burst show erosion surface, soon dry crusts, legacy pigmentation. Very serious ultraviolet allergy may be accompanied by fever, headache, heart palpitations, fatigue, nausea, vomiting, systemic symptom, etc.
Cosmetics caused by skin allergy symptoms:
Cosmetic dermatitis local skin itching, light person only a few scattered. Small red papules, erythema and mild swelling, the person that weigh local skin edema, diffuse erythema, size of scar, water seepage erosion. Most patients after only a few hours in the use of cosmetics can be allergic phenomenon, this in medicine according to type (or speed) hairstyle allergy immediately; After a few genius of an anaphylactic reaction is called late onset response. More general type for immediate response.
Causes of ultraviolet allergy
Of food can cause ultraviolet allergy: celery, lettuce, rape, spinach, amaranth, Chinese cabbage, milk vetch, ash, mustard, malan head, purslane, clover, figs, sheep hoof, lemon, green radish, parsley, and contain photosensitive material, such as leeks, this all belongs to sensitive plants. Too much food before the sun, these plants will be ultraviolet allergy symptoms
Ultraviolet allergy diagnostic work-up
Outside the spot test is a diagnostic perceptual ultraviolet allergy and check the sensitization method of matter. To introduce the most clinically practical S.E pstein method.
Match the material of sensitization suspected light into 2 pieces, are placed in an exposure to the sun on both sides of the waist, after 48 h to remove a test material, not exposed to light offline as contact reaction test, and then another UVA exposure (320 nm). After 48 h will illuminate parts compared with has covered parts in advance.
Test results such as the two are positive, for contact allergy; If two were negative reaction, for not contact allergy and light contact allergy; If only illuminate part positive, for light contact allergy; A place like a place than showed stronger positive, for sexual contact and light contact dermatitis.
Treatment and maintenance
Western medicine western medicine allergic to ultraviolet ray, generally give antiallergic, relieve allergy symptoms, conventional treatment take temporary solution not effect a permanent cure;
Traditional Chinese medicine treatment based on syndrome differentiation, emphatically in qingrejiedu, dehumidifying itching, on the basis of classification treatment;
Due to ultraviolet allergy for immune response, so need long time of maintenance, severe skin symptoms, can combine traditional Chinese and western medicine treatment.
1, the use of weak acid mild cleaning products, to protect the skin from the damage by alkaline detergent;
2, with qingrejiedu, dehumidifying itching shi fu shi fu agent;
3, along with moderate security products, in order to protect the skin moist;
4, with a mild sunscreen effect is prevented bask in a product;
5, use prevent bask in, keep out sunshine direct contact with the skin;