Finger Clubbing: This Simple Test Could Warn You Of Lung Cancer

Finger (or digital) clubbing is where the ends of your fingers swell up. It happens in stages, according to Cancer Research UK. Firstly, the base of the nail becomes soft and the skin next to the nail bed becomes shiny. Next, the nails begin to curve more than normal when looked at from the side (known as Scarmouth’s sign). In the final stage, the ends of the fingers may get larger and swell.