What are the effects of long-term exposure to mustard gas?

Long-term exposure to mustard gas, a chemical warfare agent, primarily affects the skin and mucous membranes. The intense irritant properties of mustard gas lead to severe skin burns and blisters, which can cause painful lesions and increase the risk of secondary infections. Prolonged exposure can result in chronic skin conditions as well.

While other options such as headaches and general fatigue may arise as indirect effects of long-term exposure or from the stress of dealing with the aftermath, they are not specific to mustard gas. Similarly, metal fatigue pertains to material science and mechanical degradation, and bone density loss is typically linked to different health issues rather than chemical exposure to mustard gas. Therefore, the most direct and notable health impacts of mustard gas exposure are indeed skin burns and blisters.