Hello. There are many reasons for this. One of them is the poor circulation of qi and blood, that is, the weakness of qi and blood. Another possibility is that you are usually sentimental, which leads to liver-qi discomfort. The liver is the part that runs qi and blood, and the liver qi is uncomfortable, which affects the smooth flow of qi and blood in the whole body. Another possibility is kidney-yang deficiency.

Guiding opinions:

If qi and blood are not running smoothly, you should pay more attention to tonic at ordinary times. You can drink some red dates and wolfberry water, and drink more ginger soup to warm your stomach in winter. Soak your feet with hot water before going to bed until you sweat.

If the liver-qi is uncomfortable, you should relax and be optimistic.

If it is kidney yang deficiency, pay attention to iron supplementation in diet. Iron is an important raw material for producing hemoglobin in human body, and hemoglobin is responsible for the itching of the body. Insufficient hemoglobin will lead to insufficient heat production and make your body feel cold. You can take appropriate supplements, eat leeks, dog meat and mutton at the same temperature, and recuperate your body.

Exercise properly at ordinary times to ensure sleep, and observe whether there is stomach cold at ordinary times. If so, you'd better go to the hospital.

I hope it helps you.