What should I do if there is purple-black congestion under my finger?

Refers to the congestion caused by being pinched, because after being squeezed by external force, subcutaneous cells and capillaries rupture, cell fluid overflows, cells wither, blood accumulates outside blood vessels, and inactive red blood cells turn black.

1. treatment: there is no open wound, so it is not easy to use drugs. Try to avoid touch and stimulation, so that injured cells and capillaries will not continue to rupture and congestion will not be aggravated. Safflower oil is irritating, which will accelerate the blood exudation in ruptured capillaries and aggravate congestion, so it is not available.

2, pain: there is no way, only endure two days, in order to slowly relieve the pain.