What is the reason for the sudden discovery of edema around the ankle?

The specific reasons may be as follows.

1, body position coefficient:

Walking or standing for a long time, improper sitting posture, long legs drooping and sedentary will all lead to poor blood circulation of lower limbs, so reducing the assistance of muscle exercise to venous blood return will cause edema. Improper shoes can also cause edema. This edema will subside after rest. When the weather is hot, edema will get worse.

2. Climate factors:

When the weather is hot, most of the peripheral blood vessels of the human body dilate, which makes the capillaries congested, so the skin, subcutaneous tissue and soft tissue all show mild swelling, which is the reason why they swell with heat and contract with cold. I suggest you go to the hospital for a check-up, and then make specific symptomatic treatment according to the cause.