In winter, even after applying moisturizing cream on the skin, if you feel itchy on the skin, it is not caused by dry skin but poor blood circulation.
When your blood circulation is poor, if you move from a cold place to a warm place, the blood vessel expands, causing itchy skin.
The blood flow of people whose blood circulation is poor is slower than the one of people whose blood circulation is good. That decreases the amount of heat delivered with blood. When such people go cold outside, to deliver more heat, the body pressurizes the blood vessel to make it thinner to make the blood flow faster like water from the hose flows faster when you press the hose. That makes the speed of the blood flow as fast as the people with good blood circulation (Fig. 1).
But when you move from a cold outside to a warm room and your body gets warm suddenly, you don’t need to deliver more heat and the blood vessel expands and touches the nerves under the skin, stimulating the nerve and causing itchiness (Fig. 2).
The cause of this type of itchiness is inside the skin. That is why applying moisturizing cream doesn’t suppress the itchiness.
How can you suppress this type of itchy skin?
The answer is cool the skin with water.
Pouring water over the skin where you feel itchy suppresses the itchiness (Fig. 3).
Cooling with water makes the blood vessel return to the original thickness and the blood vessel doesn’t stimulate the nerve and the itchiness stops (Fig. 4).
When the itchy area is difficult to pour water over, put a plastic bottle with cold water on the itchy area (Fig. 5).
However, the above is tentative method to suppress the itchiness. If you don’t want to have itchy skin in winter, it is important to improve the blood circulation.
What is the food to improve blood circulation?
The answer is cinnamon (Fig. 6).
It is effective to take a spoon of cinnamon (0.6 to 3 grams) a day by powdering it on toasts or add it to your tea (Fig. 7).
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