<s>[INST] my left arm has been bugging me and Ive had chest pain i went to the emergency room and they checked my heart they say my heart is healthy but why does my left arm and chest kinda hurt? i also noticed i have had phlegm in my lungs could all this be cause by inflammation? [/INST] Thanks for your question on Chat Doctor. I can understand your concern. Yes, these symptoms can be due to inflammation in the lungs. Bronchitis (inflammation of airways) can cause chest pain, phlegm production etc. So better to consult pulmonologist and get done 1. Clinical examination of respiratory system 2. PUT (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). Don't worry, you will be alright with all these. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks. </s>