Why do my toenails turn completely black and fall off after a long distance hike?
1. Introduction Toenails turning completely black and eventually falling off after a long-distance hike is the direct clinical result of repetitive mechanical microtrauma, leading to a condition known as a subungual hematoma. During a strenuous hike, particularly on steep downhill sections, the foot shifts forward within the boot, causing the toes to repeatedly strike the … Read more