What causes purple and black toenails?

Many people find that the color of their toenails has turned purple-black. This may be due to physiological reasons such as cold attack or nutritional deficiency. Of course, it may also be due to physical illness. For example, a toenail may be injured, a heart disease or blood disease may occur, or there may be a rheumatic or immune disease.

Under normal circumstances, the color of toenails should be light red. If the color changes, it may be an abnormality in the body, and sufficient attention must be paid. For example, some people's toenails will turn purple and black. This is obviously an abnormal phenomenon, and the cause must be found in time. So what’s going on when your toenails turn purple and black?

1. Physiological reasons for purple and black toenails

1. Being attacked by cold: When the weather is warm, the color of the skin is relatively ruddy, and so is the color of the toenails. . But if it is colder in winter, if the shoes you wear are too thin, or if your feet have just been taken out of cold water, the color of your toenails will change and turn purple-black. This is because the heat supply is insufficient and the blood vessels caused by shrinkage.

2. Nutritional deficiency: Nutritional deficiency is also one of the common causes of purple and black toenails. If you have a partial or picky eating habit, you will easily suffer from insufficient nutritional intake in your diet. The most common one is insufficient intake of trace elements and vitamins. In this case, your toenails may turn purple or black. of.

2. Pathological causes of purple and black toenails

1. Trauma: If the toenails are traumatized, such as being hit by a hard object or being hit by something else Squeezing can easily lead to internal bleeding, and the blood will turn purple and black after coagulation. In addition, if the toenail is accidentally scratched and is not treated in time, congestion will accumulate, causing the nail to turn purple and black.

2. Heart disease or blood disease: Purple and black toenails may be a sign of heart disease or blood disease, because the color of toenails is related to the blood supply of the body. If you suffer from heart disease Disease or blood disease, there is a high possibility of insufficient blood supply, which will cause the color of the toenails to change and appear purple and black.

3. Rheumatic and immune diseases: If the toenails appear purple and black for a long time, it may be due to rheumatic and immune diseases. After suffering from this disease, as soon as the toes come into contact with cold water or feel cold, the color of the toenails will change, turning purple or black, but it will return to normal after a while.