There are more symptoms of skin lead poisoning and there is no specific top three symptoms of skin lead poisoning. Lead poisoning mainly involves the nervous system, digestive system and blood system to produce related symptoms. 1. Involvement of the nervous system: mainly manifested as neurasthenia, polyneuropathy and encephalopathy. Patients may have dizziness, headache, memory loss, generalized weakness and sleep disorders. Polyneuropathy, on the other hand, manifests as numbness of the extremities and a glove and sock-type numbness at the ends of the limbs. The most serious of the neurological symptoms caused by lead poisoning is the occurrence of lead poisoning encephalopathy, in addition to headache, nausea, vomiting, drowsiness, irritability and high fever, and even coma, meningitis, cerebral edema or brain damage and other syndromes. 2. Involvement of the digestive system: general gastrointestinal symptoms in mild cases, abdominal cramps in severe cases. Symptoms include a metallic taste in the mouth, loss of appetite, distention and constipation in the upper abdomen, etc. Abdominal colic is usually preceded by persistent constipation and then sudden onset of abdominal colic. 3. Involvement in the blood system: It is mainly due to the fact that lead interferes with the process of hemoglobin synthesis, causes changes in its metabolites, and finally leads to hypochromic normocytic anemia. At present, the most common type of lead poisoning is chronic lead poisoning caused by occupational exposure, which needs to be prevented in production work and regular physical examination, and further systematic treatment as soon as the examination is abnormal, and do not use medication on your own, which will affect the effect of subsequent treatment.