<s>[INST] hello! My age is 24, Ill be 25 this August. Something is bothering me. I started smoking 12 months back, and I smoked about 2 cigarettes a day. Now it considerably increased to 5 cigarettes and I have cough that wouldnt go. Also, I have two patches on the either side of my inner cheeks, one is blackish (no pain, no swelling), and a scratch kind of white line on the other (no pain, no swelling). I have been coughing regularly for 25 -30 days now and have this strong urge as if there is something thats caught in my throat. Mucus is been produced normally out of cough. Two days before, I consulted a dentist and he said theres nothing to worry. I am taking antibiotics now. Some relief is there but i dont understand what is this. My tongue has few cuts fro the past two days and has this strange burning sensation. When i scratch these cuts, blood comes out (but very very little, as these are scratches that may have caused due to hard brushing that I do). Mucus is producing, I am clearing my throat every time im coughing. Im spitting it out. My throat is not comfortable these days. But since the time i have started taking medicines, amox and citrizine, it has gone a bit better. Im 24 smoking from 1 year, almost 4 cigs an average, should I worry??/ [/INST] Respected Sir, hi first about reason of what is this. it's clearly tobacco nicotine affecting your capillaries of lungs leading to worsening cough, affecting your inner cheek buccal mucosa giving it black patches and white lines. You have to quit smoking for lifetime if you want a happy healthy life in future otherwise beware of suffering from Tuberculosis or Cancer. It's in your hands whether you want to have healthy disease free life or the life cumbersome with burden of heavy diseases. I hope I have cleared your queries. Thanks regards bye take care </s>