Subungual hematoma
| Subungual hematoma | |
|---|---|
| Other names | Runner's toe, tennis toe, skier's toe | 
| Subungal haematoma of the fourth finger | |
| Specialty | Internal medicine, Podiatry | 
| Symptoms | Discoloration of nail, pain | 
| Risk factors | Poorly fitting foot wear, overtraining particularly hiking and running | 
| Treatment | Usually unmerited, blood drainage or nail removal in serious cases | 
| Prognosis | Usually self-resolving as nail grows out | 
A subungual hematoma is a collection of blood (hematoma) underneath a toenail or fingernail. It can be extremely painful for an injury of its size, although otherwise it is not a serious medical condition.