What can i do when i slammed my finger in a door?

Ice and NSAIDs: First, use ice and nsaids. If you have localized bony pain, or if you have significant difficulty moving or using your finger, or if there is a significant open wound, you should see a physician for further evaluation.

?Subungual Hematoma: If it turns black/blue under the nail you may have a subungual hematoma. These can really hurt and throb for days so i would get it checked out. Assuming no other confounding problems coexist the nail can have a small hole put in it to relieve the pressure and the pain relief is almost instantaneous. They will probably xray it which is a good idea as well. Hope this helps!:).