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What symptoms can result from long-term exposure to mercury vapour?

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A periodic table element box for mercury shows its symbol Hg, atomic number 80, atomic weight 200.592, electron configuration, and name. Icons indicate mercury is a transition metal, liquid at room temperature, has a rhombohedral crystal structure, and is weakly basic. — mercury Properties of mercury.

Chronic mercury poisoning, which can result from the occupational inhalation of mercury vapours, may manifest through a variety of physical and mental symptoms.

Common symptoms include:

A metallic taste in the mouth and excessive production of saliva.1
Inflammation of the mouth's membranes and the loosening of teeth.1
The formation of a characteristic blue line on the gums.1
Physical sensations and motor issues, such as pain, numbness, and tremors in the extremities.1
General physical decline, including loss of weight and appetite.1
Mental and personality changes, often characterized by depression and a tendency to withdraw from social interaction.1

These effects are associated with the toxic impact of mercury on body tissues and functions, necessitating stringent precautions in industrial settings to prevent inhalation or other forms of absorption.12