<s>[INST] hi, for a month or so now iv had severe cough and have been getting ear and throat infections over and over. Iv had a blood test which showed raised ESR levels which they want to repeat in two weeks. Over the last two weeks now iv felt like iv got a lump at the back of my mouth/top of my throat which is getting more and more painful eachday and i am finding that i can barley swollow, iv tried having soup and hot drinks but im lucky if i can swollow it. Im also getting sick alot. Im very concerned as im only 17 but have been smoking for six years, (have not smoked in three months though) and used to go through 40 a day. [/INST] Hello, Since you were a heavy smoker and recently left smoking, we should definitely rule out lung diseases for your persistent cough. High ESR with a persistent cough is commonly seen in lung infection like pneumonia, tuberculosis or bronchitis. So better to consult pulmonologist and get done a clinical examination of the respiratory system, chest x-ray and PFT (Pulmonary Function Test). Chest x-ray is must for the diagnosis of lung infection. PFT is needed for the diagnosis of bronchitis. You may need antibiotics and inhaled treatment based on the diagnosis. Hope I have answered your query. Let me know if I can assist you further.  </s>