C. Acute effects

Exposure to many occupational hazards causes the body to produce an immediate obvious response, called an acute effect. Acute effects often disappear soon after the exposure stops and are often reversible. An example of an acute effect is the nausea, headache or vomiting a worker might experience after using a solvent to clean auto parts. Acute effects can be localized to one part of the body (such as a skin reaction from a chemical), but they can also be systemic (if, for example, that chemical also gets absorbed into the bloodstream, there can be effects on target organs).