The ingestion of thallium salts and methanol has been associated with blindness due to damage to the optic nerve. Retina damage has been associated with exposures to arsenicals and carbon disulfide. The HCS definition for cutaneous hazards is “chemicals which affect the dermal layer of the body. ” This overlaps to a certain extent with the previously described hazards, irritant and corrosive.
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With irritant dermatitis the effect is immediate without prior exposure, whereas the allergic dermatitis requires previous exposure with the development of allergy or sensitization. Contact dermatitis is common in industry and usually consists of redness , thickening and firmness of skin , flaking , and blisters .
Aspirin and nitroglycerin can be toxic to megakaryocytes that produce blood platelets. Other toxins, e.g. , arsenic, benzene, and chlordane, hemoglobin can cause a decrease in the formation of all blood elements, a condition known as aplastic anemia.
- For example, care homes, schools, hotels, organisations that carry out hot work, food manufacturers and restaurants.
- A risk assessment is an essential precaution in fire safety procedures; our free template will help you complete one for your premises.
- These fumes include ozone, nitrogen oxides, chromium and nickel oxides, and carbon monoxide.
- Fires can be devastating, both to the organisation and to the people impacted, they can cause serious injuries, such as burns, asphyxiation and fatalities.
- Welding activities pose many hazards, including exposure to invisible gaseous fumes.
- However, some workplaces are at an increased risk – either due to the work activities or types or employees/residents.
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Normally, the contact dermatitis is reversible if the irritant or allergen is removed. The more common form of hemotoxicity results from chemicals acting directly on the hematopoietic tissues (blood-forming tissue). The primary effect is a decrease in formation of specific blood cells so that the number in the circulating blood is reduced, impairing their ability to function normally. For example, phenothiazine and anticonvulsant drugs can damage the bone marrow cells that give rise to the granuloctyes and decreased ability to fight infections.
However, here we are concerned only with effects of toxins on the skin. A variety of skin conditions can arise from exposure to toxic substances. Contact dermatitis or inflammation of the skin can be of two types, irritant dermatitis and allergic contact dermatitis. The basic inflammatory reaction is the same but the cause and progress of the dermatitis differs.