Solar radiation: cutaneous hazards and their prevention
Keywords:
Solar radiation, ultraviolet radiationAbstract
The solar radiation consists of three types of radiation, visible, infrared and ultraviolet radiation (UVR). There is daily and seasonal variation in the prevalence of ultraviolet radiation. The depth of penetration of solar radiation is directly proportional to its wavelength. Its effects on the skin are UV-induced erythema, UV-induced pigmentation and cellular responses, which include damage to DNA, epidermal hyperplasia and thickening of stratum corneum and cutaneous immunosuppression responsible for various cutaneous cancers in humans. It can also lead to various photo-induced and photo-aggravated dermatoses. Avoiding mid day exposure (between 11-3) to sunlight, use of appropriate clothing including hats, and regular use of sunscreen having SPF of 30 or more, covering both UVA and UVB, may be helpful in preventing hazards of solar radiation.ÂReferences
Arnold HL, Odom RB, James WD. Dermatoses due to physical factors. In: **. Andrew’s Diseases of the Skin, 9th edition. Philadelphia: W.B. Saunders; 2000. p. 21-49.
Warwick L. Morison. Electromagnetic radiation. In: **. Phototherapy and Photo-chemotherapy of Skin Disease, 2nd edn. New York: Raven Press; 1991. p. 10-26.
Solaer NA. Acute effects of ultraviolet radiation on the skin. Semin Dermatol 1990; 9: 11-5.
Rhodes LE, Belgi G, Parslen R et al. Ultraviolet B-induced erythema is mediated by nitric oxide and prostaglandin E2 in combination. J Invest Dermatol 2001; 117: 880-5.
Hawk JLM, Murkly GM, Holden CA. The presence of neutrophils in human cutaneous ultraviolet-B inflammation. Br J Dermatol 1988; 118: 27-30.
Eller MS, Yaar M. Gilchrest BA. DNA damage and melanogenesis. Nature 1994; 372: 413-4.
C1ydesdale GJ, Dandie GH, Muller HK. Ultraviolet light induced injury: immunological and inflammatory effect. Immunol Cell Biol 2001: 79: 547-68.
Kelly DA, Young AR, McGregor JM et al. Sensitivity to sunburn associated with susceptibility to ultraviolet radiation-induced suppression of cutaneous cell-mediated immunity. J Exp Med 2000; 191: 561-6.
Holick MF, Maclanghlin JA, Parrish JA et al. The photochemistry and photobiology of vitamin D3. In: Regan JD, Parrish JA, eds. The Science of Photomedicine. New York: Plenum Press; 1982. p. 195-218.
Herschenfeld RE, Gilchrest BA. The cumulative effects of ultraviolet radiation on the skin; photoaging. In: Hawk JLM, ed. Photodermatology. London: Arnold; 1999. p. 69-89.
Wang SQ, Setlow R, Berwick M et al. Ultraviolet A and melanoma: a review. J Am Acad Dematol 2001; 44: 837-46.
Brasha DE, Ziegler A, Jonason T et al. Sunlight and sunburn in human skin cancer: p53, apoptosis, and tumor promotion. J Invest Dermatol Symp Proc 1996; 1:136-42
Marks R, Dykes P, Motley R. Clinical Signs and Procedures in Dermatology, 1st edn. London: Martin Dunitz; 1993. p. 64-70.
Moloney FJ, Collins S, Murphy GM. Sunscreens: safety, efficacy and appropriate use. Am J Clin Dermatol 2002; 3: 185-91.
Kullavanijaya P, Lim HW. Photoprotection. J Am Acad Dermatol 2005; 52: 937-56;-quiz 959-62.
Menter JM, Hatch KL. Clothing as solar radiation protection. Curr Probl Dermatol 2003; 31: 50-63.
Naylor MF, Farmer KC. The case for sunscreens. A review of their use in preventing actinic damage and neoplasia. Arch Dermatol 1997; 133: 1146-54.
Deleo V. Sunscreen use in photodermatoses. Dermatol Clin 2006; 24: 27-63.
Kaidbey KH. The photoprotective potential of the new superpotent Sunscreen. J Am Acad Dermatol 1990; 22: 449-52.
