Which symptoms may indicate asbestos-related diseases?

Persistent cough, fatigue, and respiratory issues are critical symptoms that may indicate asbestos-related diseases. Asbestos exposure can lead to serious lung conditions such as asbestosis, lung cancer, and mesothelioma, which notably manifest through respiratory problems. The persistent cough is often a result of lung irritation or damage, while fatigue can be a general outcome of the body's struggle against chronic lung diseases. Inhalation of asbestos fibers can severely impair lung function, leading to symptoms that are primarily respiratory in nature.

In contrast, while the other symptom sets noted in the choices can indicate various health issues, they are not specifically indicative of asbestos-related conditions. For instance, frequent headaches and dizziness might suggest other neurological or environmental factors but do not directly relate to the primary impact of asbestos exposure. Similarly, nausea and vomiting are signs of gastrointestinal problems rather than respiratory issues tied to asbestos. Joint pain and swelling are more reflective of musculoskeletal conditions and typically do not correlate with the respiratory system effects caused by asbestos. Thus, the correct choice encompasses the symptoms most closely associated with the respiratory diseases linked to asbestos exposure.