Your skin and nails might hold more clues about your heart health than you’d expect. Some surprising changes—like swelling in the feet, purple or bluish tones, or even tiny red streaks under the nails—could be early signs of heart issues. Recognizing these symptoms might help you catch potential heart disease sooner. Dr. O'Donovan highlights 12 key skin and nail changes that may hint at underlying heart conditions. Knowing what to watch for could make a difference.