The occupational physician has a particular experience in identifying the symptoms caused by the worker’s exposure to:

• acidic chemical agents, basic or toxic in general, coming into contact with the various body systems, in particular the respiratory, digestive, integumentary systems and the repercussions on the nervous system
• physical agents such as radiation, of varied energy, in particular ultraviolet rays, X-rays, gamma rays
• volatile substances of varying intrinsic toxicity, which, however, once inhaled can have various consequences. These substances are primarily asbestos fibres that cause asbestosis, then coal dust (a rare occurrence today).