Swollen legs and neck may be caused by physiological factors such as standing for a long time, or by pathological factors such as trauma, gout and renal failure. 1. Physiological factors: standing for a long time and keeping the posture unchanged can lead to the obstruction of venous return, which will lead to the problem of swollen legs and neck. 2. Trauma: In case of trauma, such as a sprained foot, it may lead to swelling and pain in the legs and neck. 3. Gout: It is a joint disease caused by the deposition of monosodium urate in the body, and its common symptoms are redness, swelling, pain and deformity of joints, so swollen legs and neck may also be a symptom of gout. 4. Renal failure: in the event of kidney function impairment, the kidney excretion of water ability to decline, so that the body’s water discharge is limited, will accumulate in the body, may cause leg and neck edema. If your legs and neck are swollen, after excluding physiological factors, we suggest that you consult a doctor for diagnosis and treatment after clarifying the cause.