In which situations is a pneumoconiosis examination necessary?

The groups that need to have a pneumoconiosis examination early include: people who smoke directly or indirectly, occupational groups frequently inhaling free silica, groups frequently inhaling large amounts of dust, and groups with chronic respiratory diseases such as chronic bronchitis. When signs such as cough, sputum production and chest pain appear, they should promptly go to a physical examination center or a hospital qualified to conduct physical examinations. The examination mainly focuses on the lungs, and at least a routine physical examination should also be done.

Free silica, various dusts, cigarette smoke, etc., after entering the lungs from the upper respiratory tract, are generally mostly expelled. This depends on the condition of the individual's lung capacity. With every breath, more or less dust, free silica, etc. will always remain in the bronchioles and alveoli. Especially in groups who smoke indirectly or inhale excessive dust, more dust, dust mites, etc. will enter the bronchi and alveoli and be difficult to expel.

The dust, free silica and other pneumoconiosis-causing agents retained in the pulmonary bronchioles and alveoli are constantly being phagocytosed by alveolar macrophages and cleared. In fact, these phagocytosed macrophages and the dust adhering to them are difficult to clear out, and they become the direct elements of pneumoconiosis. The phagocytosing macrophages, dust, etc. retained in the pulmonary bronchioles and alveoli undergo chemical interaction with normal lung cells to form pneumoconiosis, and will still continue the chemical effect, worsening the condition.

In this constant struggle, pneumoconiosis patients will first develop a cough, and later often have comorbid lung diseases such as chronic bronchitis. In the middle and late stages, they may often have concurrent lung infections, with both coughing and sputum production worsening, showing a certain correspondence with the alternation of seasons and climate changes. The correlation between chest pain and pneumoconiosis is not strong, though some patients do show an association, presenting as dull pain, pain in varying locations, distending pain, needle-like pain, and so on. When these symptoms are obvious, medical examination should be sought promptly.