May 25 is the skin of the Tenth National Day, with the theme 'Health care.' Air Force General Hospital Dermatology Hospital Medical Tian Yan Zhuren surgery specialist will lead the team, on the 25th at 8:30 am to 11:30 am, in the outpatient hall first floor of clinic activities, and launched a series of health care science propaganda, for moderate to severe acne, sensitive skin, facial atopic dermatitis, eczema, chloasma, seborrheic dermatitis, rosacea and more common in summer sunlight rash, smallpox-like vesicular disease, chronic actinic dermatitis, solar urticaria and other skin diseases, doctors will carry out all diagnosis, but also for the beauty of women to provide relevant advice skin care, cosmetics and distribute medical sample, so that more people grasp the medical skin care, skin care scientific methods to improve skin health consciousness of the people, are welcome to attend.
Sunscreen summer Dermatology good sunscreen is a prerequisite for high
Modern pursuit of sun, sand, return to natural feeling exposed, knowing that over a variety of skin damage caused by ultraviolet radiation also coming up, such as sunburn, skin blackening, skin photoaging, light-sensitive skin and even skin cancer and so on. now basic skin damage caused by ultraviolet radiation explain.
1. Popular, that means sun peeling sunburn or tan, more professional view sunburn is a burn, that sun appears a series of symptoms, usually at a higher altitude, the more intense sunshine areas, strong sunlight irradiation tens of minutes or even ten minutes can make the skin erythema, edema or blisters, after the acute phase of injury can appear rough skin, dehydration can also cause secondary pigmentation, sunburn called on this case medicine. swimming in the sea for a long time can cause sunburn. sunburn caused by ultraviolet band mainly UVB, namely ultraviolet If waiting Hainan, Xinjiang or Tibet, the strong sunlight of the region may be able to burn ten minutes .
2. tanning also divided into different types: red first after tanning black type and direct-type after the first red-black type belongs delayed tanning, mainly with UVB, whereas the direct type is mainly UVA tanning effect results. whether driving or walking, prolonged exposure to ultraviolet radiation can cause skin tanning. many people think that every day in the car will not tan, but in fact this is a misunderstanding, the glass can block ultraviolet UVB, but not stop UVA, therefore, even in the car every day, will be tan. it should be noted that not only need sunscreen sunny and cloudy weather should also use sunscreen, because UFA can penetrate clouds reach the ground, you can wear through the glass. Thus, the use of sunscreen cosmetics should first clarify the mechanism of sunscreen.
3. People usually due to genetic and irresistible factors (such as gravity, the body's vital organs of physiological dysfunction caused by aging skin immanence called natural aging, due to environmental factors such as ultraviolet radiation, smoke, wind and in contact with skin aging caused by harmful chemicals called extrinsic aging due to UV radiation in sunlight is a major factor in environmental factors lead to skin aging, so-called exogenous aging of the skin refers to skin photoaging, while photoaging characterized in that the change is limited to light-exposed parts of skin roughness slightly thick, leather trench deepened, skin ridge uplift, appeared leather-like appearance, the so-called coarse deep wrinkles. nuchal diamond skin is common in a typical seafarers and farmers photoaging skin lesions. photoaging can be manifested as skin atrophy height, skin thin, skin veins bulge, this change is more common in outdoor workers face and hands back the skin. skin photoaging another feature is that the light parts appear filthy pigment spots, such as age spots, uneven shades can also be pigment imbalances. long-term exposure to sunlight may also induce a series of proliferative diseases, such as seborrheic keratosis, colloid milia light granuloma, solar angle albinism, etc., also known as solar keratoses, actinic keratosis, clinically considered to be a precancerous skin lesions known as carcinoma in situ. in addition, sun exposure and a variety of skin malignancies are closely relations, such as basal cell carcinoma, squamous cell carcinoma, tumor of melanocytes.
4. The sunburn, tanning and photoaging skin and so is a normal reaction to UV irradiation, under certain conditions, almost all individuals can occur while the skin is light sensitive part of the skin to ultraviolet radiation abnormal reaction, which only place in a small part of the population, which is characterized by light sensitivity in mediating substance, the skin of UV resistance or reduced susceptibility increased, causing phototoxic reaction or light skin allergy and lead to a series of related diseases. cause skin light-sensitive material that is light and sources of emotional substance with the development of the chemical industry, light sensitivity substance contact people in their daily lives more and more common sources: (1 everyday life: such as cosmetics, cleaning and washing supplies, household items, certain plants, spices and dyes, etc., (2 diet: certain foods such as gray vegetables, milk vetch, figs, snail, and food additives, etc. (3 occupational exposure: such as coal tar, bitumen, flavors, dyes, pesticides and certain external use, (4 drugs: drugs are an important source of light-sensitive substances such as sulfonamides 1940s, 1950s and chlorpromazine tetracycline, nalidixic acid is 60 years. It was a famous light-sensitive drugs.
5. A variety of skin diseases and pathological conditions enable the body to UV irradiation increased sensitivity to light and damage to the main clinical manifestations, such as exogenous light-sensitive substance-induced phototoxic reactions and photoallergic possible from the inside xenobiotics and energy photon interaction produces idiopathic photosensitivity skin disease, such as polymorphic light eruption, smallpox-like vesicular disease, chronic actinic dermatitis, solar urticaria, etc. While certain diseases not to light damage as the main performance, but with the course of the sun-sensitive, or after exposure can aggravate their condition, such diseases include metabolic and nutritional disorders of the skin, such as porphyria, nicotinic acid deficiency, accompanied by light-sensitive genetic skin diseases such as xeroderma pigmentosum disease, Bloom syndrome, Cockayane syndrome, congenital pigmentary abnormalities, congenital ectodermal dysplasia, congenital poikiloderma, dyskeratosis congenita, connective tissue diseases such as lupus erythematosus , dermatomyositis, abnormal skin keratosis, disseminated superficial actinic keratosis sweat duct, there are other rosacea, lichen planus, bullous diseases and some of these skin diseases or pathological conditions can cause or contribute to photo-aging. (text / Air Force General hospital Dermatology hospital medical cosmetic specialist Tian Yan
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