We recently had a Stanford Medicine 25 session where our interns and students were shown various nail findings. The picture shown below is called a Half and Half Nail (or Lindsay’s Nail). As the name implies, Half and Half Nails are hallmarked by separate and almost even halfs with one half more pale than the other. This finding is usually seen in all (or almost all) nails when found. It is associated with chronic renal insufficiency.