What are the symptoms of tin poisoning?

　　Tin poisoning presents with a variety of symptoms, which mainly include neurological damage, gastrointestinal abnormalities, respiratory discomfort, irritation of the skin and mucous membranes, and signs of kidney function impairment, depending on the route and dose of tin exposure. A detailed analysis is as follows:

　　1. Neurological damage symptoms: Early symptoms often include headache and dizziness, accompanied by fatigue and lethargy, with difficulty concentrating. If poisoning worsens, numbness and tremors in the limbs may occur; in severe cases, individuals may experience slowed reactions and confusion, affecting normal cognitive and motor functions.

　　2. Gastrointestinal abnormalities: A metallic taste in the mouth may appear initially, followed by nausea and vomiting, with vomitus typically consisting of gastric contents. Abdominal pain and diarrhea may also occur, with stool becoming loose or containing mucus. Some patients may exhibit poor appetite and indigestion.

　　3. Respiratory discomfort: Poisoning caused by inhalation of tin-containing dust or fumes can easily trigger coughing, chest tightness, and mild chest pain during breathing. In severe cases, shortness of breath and dyspnea may develop, and lung irritation may lead to inflammatory responses.

　　4. Skin and mucous membrane irritation: After direct contact with tin compounds, the skin may become red, swollen, and itchy; some individuals may develop rashes or blisters, which are prone to secondary infection if scratched. Eye exposure may result in conjunctival congestion, tearing, photophobia, and a foreign body sensation.

　　5. Signs of kidney function impairment: In later stages of poisoning, renal function may be affected, manifesting as decreased or increased urine output and darkened urine color. Some patients may experience lower back soreness or pain, and kidney function tests may show abnormal results.

　　In daily work, prolonged exposure to harmful tin-containing substances should be avoided. Proper personal protective measures must be taken, and regular health check-ups are recommended to reduce the risk of tin poisoning.