Mercury accumulates in the kidneys, erythrocytes, bone marrow, liver, spleen, lungs, skin and hair. The most common effects of mercury exposure are manifested in the central nervous system. Acute exposure to mercury vapor leads to pulmonary and central nervous system effects. Inhalation of high levels of mercury vapor can cause the onset of symptoms such as cough, dyspnea, chest pain, nausea, vomiting, diarrhea, fever and a metallic taste in the mouth. These symptoms can progress to interstitial pneumonitis and pulmonary edema.
Young children are at the greatest risk of developing pulmonary toxicity.
Chronic exposure to lower levels of mercury vapor causes effects to the central nervous system. Symptoms of chronic poisoning vary, but may include tremors, psychological changes, insomnia, loss of appetite, irritability, headache and short-term memory loss. Direct contact with the skin can lead to dermatitis. Its symptoms include severe leg cramps, irritability and painful pink fingers with peeling hands. Few children exposed to mercury develop acrodynia.