06/02/2026
Blood under the nail (subungal hematoma) is really painful because of the pressure...
A few years ago I came home from being on call and seeing baby in hopsital and was trying to quietly shut my car door to avoid waking up kids...slammed my finger in the car. The throbbing pain was so bad from the pressure under the nail I could hardly sleep so now I keep one of these at home.
The high temp fine tip cautery goes straight through the nail without any pain (this brave boy said he was just upset about seeing blood) and instantly relieves the pressure.
Not an emergency...can be handled in the morning usually or within a day or two. Adding financial insult to injury, going to a regular office for this is a 99213 + subungal hematoma evacuation and will easily run you north of $300...we do it as part of our direct primary care membership at no charge!