Your hands reveal a lot about the state of your health. This is something that has been recognized since at least the time of Hippocrates, the father of modern medicine.
The ancient Greek physician first described “clubbing“ in a patient with empyema (where pus fills the space between the lungs and the membrane around it) in the fifth century B.C. Clubbing is where the nail looks rounded, like the backside of a spoon, and it is still recognized as a sign of disease. Nowadays, clubbing is linked to more than just empyema. It is also linked to cystic fibrosis, cirrhosis of the liver, and thyroid conditions.

