I dropped an iron on my foot and now i have a black toenail. is there any medicine that i can take or an ointmentthat i can apply to it?

Ouch.: You have a hematoma (bruise) under the nail, and like any bruise, it will resolve by itself over time. The nail may or may not peel off in the process. Rarely, severe pain will develop, which means pressure is building up under the nail. If that happens, see a doctor right away.

Needs evaluation: The trauma creating bleeding under the toenail. If pain is present the blood may need to be drained or the toenail removed to avoid infection. Also x-ray may be needed to make sure there is no fracture of the toe.

Nail injury: Most likely blood under the nail but you can also have a fracure and/or laceration under the nail as well.

Bleeding under nail: Usually bleeding under a toenail will look very dark purple or black. It lasts until the nail grows out - usually several months. If there is a lot of pressure, pain, or throbbing, it can help to have a small opening made in the nail, over the black area, to let some of the blood out.