Some anatomic regions are more sensitive than others. Susceptibility is often enhanced by wet work and conditions such as cold and windy weather, low relative humidity, and high temperatures that cause sweating. Besides age, personal factors that predispose persons to irritant contact dermatitis include genetic constitution and previous episodes of eczema.Įnvironmental and physical factors influence the skin’s susceptibility to irritant contact dermatitis. The occurrence of skin problems is also common in the elderly. During play, children are likely to have skin contact with soils containing hazardous substances or with wooden playground structures that may have been treated with irritating chemicals such as arsenate and pentachlorophenol. Irritation reactivity gradually lessens after about 8 years of age. The young are generally more susceptible to irritant contact dermatitis than adults are because the threshold for skin irritation is low in children, particularly infants. If exposure ceases, however, this protective adaptation is lost rapidly. The skin becomes tough and resistant at the sites of contact, allowing further exposure to the irritant but without reaction. Irritant contact dermatitis rarely spreads to areas of the body remote from the site(s) of direct contact.Ĭutaneous hardening can develop when patients with irritant contact dermatitis have daily exposure to irritating substances. When contact with the offending irritant is discontinued, the rash usually resolves spontaneously in 1 to 3 weeks. Painful fissures may develop, along with hyperpigmentation, crusts, and scales. (For a discussion of allergic contact dermatitis, see page 9.)Īfter days to weeks of chronic irritant exposure, the skin may become lichenified. Itching, stinging, and burning sensations may be noted-especially with stronger irritants-but are generally not as severe as symptoms of patients who have allergic contact dermatitis. Irritant contact dermatitis caused by chronic exposure to mild irritants typically begins with erythema and progresses to eczema with exudative vesicles and papules, most often limited to the area of direct contact. In the occupational exposure setting, the most common skin lesions (greater than 90%) are dermatitis due to either contact irritation or contact allergy, with irritant contact dermatitis being reported more frequently. ❑ Lesions of irritant contact dermatitis are localized and the symptoms are generally less severe than those of allergic contact dermatitis. ❑ More than 90% of skin lesions caused in the workplace are contact dermatitis. Accurate diagnoses and identification of etiologies are necessary, not only to properly treat skin diseases, but also to prevent future occurrence of disease or exposure.įamiliarity with the vocabulary of dermatology is helpful in understanding this specialized topic. Seven common skin conditions that can have environmental etiologies are presented in this monograph. Dermatitis from chemical exposures in the workplace accounts for about 30% of all reported occupational illness the prevalence of skin lesions due to chemicals encountered outside the workplace (i.e., environmental exposures) may never be known. The large number of chemicals in the home and workplace and the accidental and intentional releases to air, water, and soil potentially allow ever-increasing contact with chemicals in the environment. Because the skin has such a prominent and protective role, many factors affect it adversely, including mechanical agents (friction, vibration, pressure, and trauma) physical agents (heat, cold, and radiation) biologic agents (plants, insects, animals, and microbes) and a variety of chemical agents. The skin ensures the body’s integrity by preserving internal fluids and electrolytes, maintaining thermoregulation, and protecting against physical injury and entry of harmful agents. to 4:30 p.m.Unlike most organs, the skin is in constant contact with the external environment. To find out if you have unclaimed property, search at or call the Treasury’s Unclaimed Property Division toll-free at 1-88 Monday through Friday, 10 a.m. One of the main reasons an item becomes unclaimed property is that a company has an incorrect or old address and it unable to return funds due. As a result, Treasury can clear out a backlog of unclaimed property still on the books and is able to mail checks to citizens without the need to file a claim. Act 339 of the 2018 Regular Session permits the Louisiana Department of Revenue to share its database of current addresses with the Treasury for the purpose of returning unclaimed property.
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