One UK woman is warning about an unusual lung cancer sign: “finger clubbing.” Oncology nurse advisor Emma Norton says most people are unaware of this test. “Checking your fingers for signs of clubbing is called the Schamroth window test.”
To do it, press the nails of your index fingers together. A small diamond-shaped gap should appear between your cuticles. If there’s no gap, it could indicate clubbing, a potential sign of lung cancer or other health issues.
“Finger clubbing usually happens in both fingers but could happen in just one.” Affected fingers may appear swollen, and nails might curve like a beak. Some people with clubbing have later been diagnosed with lung cancer.
However, finger changes can signal other conditions, too. Performing the Schamroth window test at home is easy and can help detect potential health concerns early.
