###Human: Is clubbing in chronic smoker something serious? ###Assistant: Hi. This is mild clubbing and it is normal in young females. It is due to estrogen hormone in females. Please keep yourself miles apart from tobacco and alcohol. To be on the safe side, have a chest X-ray done and send me here to look for any pulmonary cause, as you have 10 years of smoking history. Usually, smokers develop clubbing when they have cyanosis, that is more concentration of deoxygenated blood in vessels but your fingers do not seem to be cyanosed. Cyanosis means the bluish appearance of nails, tongue and lips, etc. Your fingers and nails appear pink means no cyanosis. Again I emphasize to avoid smoking. Chest X-ray.