Sunburn Causes and Risk Factors

Sunburn
Causes and Risk Factors
Factors affecting UV-induced erythema include: Wave-length, UV-B is more than UV-A eritmogen -Pigmentation and skin type, people with a more pronounced pigmentation, Brunetière and blacks are more protected from burns, compared to whites, and people with oily or combination skin type to those with dry skin -Hydration-ultraviolet burns more frequently cause skin moist from the dry -Reflection-radiation environment is reflected by 80% compared with ice and snow, sand 15% High-ozone layer more UV filters -Altitude, thin air and is present at high altitudes-up to absorb less-beam exposure is greater at the equator The day-time UV exposure is high-between 10 am and 4 day, when the sun is at its zenith (in the middle of the sky).
Phototoxic reactions are caused by topical and systemic pharmacologic agents, cause sunburn UV-A spectrum. In contrast with photoallergic reactions, phototoxic reactions may occur after initial exposure of the body and does not affect areas that were protected from light.
Topical agents that cause phototoxicity include: Coal-derivatives-acridine, anthracene, fluorentenul, naphthalene, phenanthrene, pyridine, thiophene, - Pigments, paint-acriflavina, antraquinona, cadmium sulfate, eosin, methylene blue, rose Bengal, blue toluidin -Metoxsalen Legiminoaselor-plant-family, family Moraceae, Rutaceae family-poratocala, lemon, lime Umbeliferae-family-, retinoids, tazarotene, adapalene, vitamin A.
Systemic agents that cause phototoxicity include: -Antimicrobial: ceftazidime, griseofulvin, quinolones, sulfonamides, tetracyclines, trimetroprimul -Antineoplazicele: dacarbazine, 5-fluorouracil, vinblastine -Antimalarials: quinina Cadiace-drugs: quinidine, amiodarone -Diuretics: furosemide, hydrochlorothiazide -Lipid: clifobrat, atorvastatin Nonsteroidal anti-inflammatory, diclofenac, ibuprofen, indomethacin, ketoprofen, naproxen, piroxicam, sulindac -Psoralen: metoxsalen, triosalen -Antipsychotics: alprazolam, chlorpromazine, despiramina, imipramine, perfanazina, tioridazone -Retinoids: acitretin, isotretinoin -Sulfonyl-urea tolbutamide.
Sunburn
Causes and Risk Factors