Subtle Nail Change Signals Deadly Skin Cancer A faint brown streak beneath a fingernail might seem harmless, but for Elizabeth Misselbrook, it became a critical warning sign of a rare and aggressive form of skin cancer. The seemingly innocuous line on her nail eventually led to the loss of part of her finger, highlighting the importance of noticing minor changes in nail appearance. Initial Reassurance In September 2019, Elizabeth first noticed an unusual streak under the middle fingernail of her left hand. Her general practitioner dismissed...