<s>[INST] when i smoke marijuana sometimes i have a hard time settling my nerves down or calming down enough to sit down. I usually pace back and forth for awhile until eventually i can relax and sit down and i will have what feel like chest cramps once i sit down what might be happening that is causing the chest cramps? [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Any form of smoke when inhaled can cause irritation and inflammation of the airways. And they will cause bronchitis. This bronchitis can cause chest cramps. So better to stop Marijuana smoking as soon as possible. Consult pulmonologist and get done clinical examination of respiratory system and PFT (pulmonary function test). PFT will not only diagnose bronchitis, but it will also tell you about severity of the disease. And treatment is based on severity only. You may need inhaled bronchodilator and inhaled corticosteroids (ICS) on the basis of these reports. But first Marijuana smoking should be stopped. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>