2 doctors weighed in:
I slammed my finger in a door on accidently. Now it is black and blue. And a little pressure how will I know if I need a hole in my nail? Looks wise.
2 doctors weighed in

Dr. Gregory Hines
Family Medicine
1 doctor agrees
In brief: Nail bruised?
If the nail is black and blue, it means you have a bruise/blood collection under the nail.
Piercing the nail will allow the blood to evacuate, and will relieve the pressure. However, you should see your doctor, as he can anesthetize your finger first if it is needed. If the finger is broken, you should be seen as well.

In brief: Nail bruised?
If the nail is black and blue, it means you have a bruise/blood collection under the nail.
Piercing the nail will allow the blood to evacuate, and will relieve the pressure. However, you should see your doctor, as he can anesthetize your finger first if it is needed. If the finger is broken, you should be seen as well.
Dr. Gregory Hines
Dr. Gregory Hines
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