Brief Answer: Suspecting poisoning based on symptoms sir Detailed Answer: Hello sir and welcome. Thank you for writing to us. Based on your symptoms the most plausible cause could be poisoning, as this matches the provided description and symptoms in the closest possible way. The possible poisons that could have resulted in this presentation are: -Bismuth poisoning -Asbestos poisoning -Lead poisoning and a few other options. I would recommend pulmonary function tests, chest x-ray, CT scan of the chest, blood investigations to check on the levels of the above mentioned substances and other possible substances. I would either way recommend a visit to your doctor sir, who would also need help from the CDC (center of disease control and prevention) to diagnose and permanently solve your problem sir. Please do not delay a visit to your doctor any longer sir, this is my sincere request to you. I hope you find my response both helpful and informative. Please feel free to write back to me for any further clarifications, I would be more than happy to help you. Best wishes.