runner's toe

Bleeding under the toenail, which most commonly occurs when the toenail is too long and the tip is in regular contact with the footwear
Management If the haematoma is large and painful, placing a small hole—paperclip-sized—should suffice for drainage, coupled with analgesics
Prevention Trim nails, use properly fitted shoes, boots
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.