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Analyzing a Patient's Nail for Medical Clues
This chapter explores how a patient's nail can provide valuable insights into their smoking habits and medical history. It delves into the density of nicotine stains on the nail, indicating heavy smoking and recent cessation due to a stroke. Additionally, it reveals the growth rate of the nail, prompting William Osler's famous question, with a rate of 0.5 to 1.3 millimeters per week.