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C C C [ [ C [ [ [ C [ [ [ [ [ [ [ [ [ <br /> TABLE 201-1 (continued) <br /> Classification, Medical Aspects, and Prevention of Heat Illness <br /> Underlying <br /> Physiological <br /> Category and Clinical Features Predisposing Factors Disturbances Treatment Prevention <br /> Skin Eruptions <br /> (a) Heat Rash <br /> (miliaria rubra, or "pricklyheat") <br /> Profuse tiny raised red vesicles(blisterlike) on Unrelieved exposure to humid Plugging of sweat gland ducts Mild drying lotions; skin Cool sleeping quarters to <br /> affected areas; pdcW g;sensadons during heat heat with skin continuously with sweat retention and cleanliness to prevent allow skin to dry between <br /> exposure wet from unevaporated sweat inflammatory reaction Infection heat exposures <br /> (b) Anhidrotic Heat Exhaustloe <br /> (miliaria profunda) <br /> Weeks or months of constant <br /> Extensive areas of skin which do not sweat on heat exposure to climatic heat with Skin trauma (heat rash; No effective treatment Treat heat rash and avoid <br /> exposure, but present gooseflesh appearance, which previous history of extensive sunburn) causes sweat available for anhidrotic further skin trauma by <br /> subsides with cool environments; associated with heat rash and sunburn retention deep in skin; areas of skin;recovery of sunburn; provide periodic <br /> incapacitation in heat reduced evaporative cooling sweating occurs gradually relief from sustained heat <br /> causes heat intolerance on return to cooler climate <br /> Behavioral Disorders <br /> (a) Heat Fatigue -Transient <br /> Performance decrement Discomfort and physiologic Findicatednless Acclimatization and <br /> Impaired performance of skilled sensorimotor, greater in unacclimatized and strain other heat training for work in the <br /> mental, or vigilance tasks, in heat unskilled worker illness heat <br /> (b) Heat Fatigue -Chronic <br /> Workers at risk come from Psychosocial stresses probably Medical treatment for Orientation on life in hot <br /> Reduced performance capacity;lowering of sell- temperature climates for long as important as heat stress; serious causes;speedy regions (customs, climate, <br /> imposed standards of social behavior(e.g., residence in tropical latitudes may involve hormonal relief of symptoms on living conditions, etc.) <br /> alcoholic over-indulgence); Inability to imbalance but no positive returning home <br /> concentrate, etc. evidence <br /> Revised: 11/93 HS-201-6 Woodward-Clyde <br />