A Dirt-Like Patch Kept Growing on a Young Man's Chest, and One Alcohol Wipe Nearly Erased It

For six months, a patch on a 25-year-old man's chest kept slowly growing. It did not hurt, but it had become a large, sharply bordered, wart-like yellowish plaque, and his doctors took a skin biopsy to find out what it was.

The answer came from a far simpler test. When a resident rubbed the area with 70% isopropyl alcohol, the plaque almost completely disappeared on the spot.