The causes of sudden edema of the calves are pregnancy edema, premenstrual tension syndrome, right heart failure, cirrhosis, hypothyroidism, hyperthyroidism, filariasis and so on.
1. Gestational edema: edema of different degrees can appear in the late stage of pregnancy and disappear after delivery.
2. Premenstrual tension syndrome: 7~14 days before the onset of menstruation in women, edema of lower limbs may appear due to hormonal changes.
3. Right heart failure: Patients with right heart failure may have edema due to decreased circulating blood volume. Edema often occurs in the low-hanging parts of the body, such as patients get up and move, it is easy to appear in the ankles, and can be relieved after rest. In severe cases, it can lead to generalized edema.
4. Cirrhosis: Cirrhosis patients have edema due to portal hypertension, secondary aldosteronism, hypoalbuminemia, etc. Edema often occurs in the lower limbs, and can gradually spread upward with the severity.
5. Hypothyroidism: patients with hypothyroidism may have mucous edema, which does not produce obvious depression when pressed, and the skin in the edematous area is often pale, cold and rough.
6. Hyperthyroidism: Hyperthyroidism due to protein decomposition is greater than synthesis can lead to hypoproteinemia, plasma colloid osmotic pressure is reduced, resulting in plasma fluid into the tissue interstitial space, thus causing edema. In addition, due to the tissue space mucin and other colloidal substances gathered to produce limited mucous edema.
7. Filariasis: filarial worms obstruct lymphatic vessels, resulting in impaired lymphatic return and lower extremity edema.
Sudden edema of the lower legs may also have other pathological factors, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.