What are the possible causes of unexplained edema of lower limbs?

Local inflammation is the response of human vascular tissue to remove damage factors and repair tissues, which can be caused by infection or non-infection reasons, such as trauma and autoimmune reaction. If infection or trauma leads to inflammation of lower limbs, vascular permeability increases, plasma enters the gap, causing local swelling, oppressing circulation, affecting venous and lymphatic reflux, and further aggravating swelling. Tissue swelling caused by inflammation is often accompanied by pain. Circulation disorder: If the embolus blocks the vein, it will form edema in a short time. Thrombosis is the main embolus of lower extremity vein. There is no thrombus in the blood vessels of normal people, but for vascular injury caused by trauma, the application of procoagulant drugs, long-term immobility of lower limbs and diseases prone to thrombosis, such as atherosclerosis, may form thrombus in a short time, block veins and cause edema; Occasionally, unexplained edema of lower limbs occurs during exercise, which can be quickly relieved by itself.

There are many reasons for edema of lower limbs, both physiological and pathological. There are two common physiological reasons: idiopathic edema, which is more common in young people, has obvious symptoms in the morning and relieves or disappears after activities, which is related to mental stress or autonomic nerve dysfunction; Some women will have edema before menstruation, and with the end of menstruation, the edema will also subside. In both cases, no special drug intervention is needed. Common pathological reasons: ① nutritional edema, due to long-term insufficient nutritional intake, it is necessary to strengthen nutrition for treatment; ② Insufficiency of heart, liver and kidney can lead to edema of lower limbs, and the treatment is mainly to improve liver, heart and kidney function; ③ Venous thrombosis of lower limbs, mostly unilateral foot swelling, is mainly treated with anticoagulation. ④ Venous insufficiency of lower limbs: it is more common in the elderly, and asymmetric swelling of lower limbs is more common, so elastic socks can be worn to relieve symptoms; ⑤ Hypothyroidism can cause non-depressive edema, and thyroid hormone supplementation can improve symptoms. ⑥ Trauma or arthritis: often accompanied by redness, swelling, heat, pain and joint movement disorder.

Non-steroidal drugs can relieve symptoms, and in a few cases surgery is needed. Therefore, it is necessary to treat lower extremity edema in time, find out the reasons and treat it actively. In addition to edema caused by kidney disease, so is liver disease. Many people are affected by liver disease. In the process of liver disease, the body's ability to synthesize protein is reduced, and the absorption of nutrients is also hindered, which may lead to insufficient access to protein and affect health. When the osmotic pressure of cells changes, edema of lower limbs will occur. If this happens, it also implies that there is a health problem. Treatment measures should be taken for liver diseases, which can improve liver diseases and prevent edema of lower limbs. Heart disease has a great influence on heart disease, and many patients with heart disease will have edema of lower limbs. In the development of heart disease, systemic venous pressure and capillary filtration pressure increase, leading to edema.

The edema of most patients starts from the lower limbs, and with the development of the disease, systemic edema may occur. Therefore, for these special edema manifestations, we should be alert to the condition and improve it through timely treatment. Only by restoring the normal function of the heart can the edema of the body be alleviated. The influence of hypothyroidism in thyroid diseases will lead to edema of patients' lower limbs. Hypothyroidism is mainly related to insufficient secretion of thyroid hormone, and slow metabolism may cause mucinous edema. This kind of edema is different from edema caused by other diseases. The swollen part is relatively solid, and there will be no obvious depression after pressing. Therefore, we should actively treat hypothyroidism, improve thyroid function through reasonable measures and control the development of thyroid diseases. When hypoalbuminemia is swollen, the first thing that comes to mind is kidney disease. In fact, in addition to nephropathy, hypoalbuminemia also has this phenomenon. Chronic malnutrition is the cause of hypoproteinemia.