Heavy and painless sensation in both lower limbs, the common clinical causes are Parkinson’s disease, lumbar disc herniation, varicose veins in lower limbs and so on. 1. Parkinson’s disease: this condition refers to a common clinical degenerative disease of the nervous system in the elderly, which is related to the aging of the nervous system, the environment, genetics and other factors. Clinical manifestations are static tremor, muscle tonus, motor retardation, postural balance disorders and so on. 2. Lumbar intervertebral disc herniation: degeneration of lumbar intervertebral disc, total or partial rupture of the annulus fibrosus, resulting in nucleus pulposus protrusion, compression or irritation of nerve root and cauda equina, with clinical manifestations such as lumbar pain, numbness of the lower limbs, cauda equina syndrome, sciatica, and so on. 3. Varicose veins of the lower limbs: this condition refers to a kind of disease caused by the dysfunction of superficial veins of the lower limbs, and the main cause is venous hypertension and structural abnormality of the vein wall. Clinical manifestations include leg soreness and swelling as well as leg ulcers, superficial phlebitis, bleeding and other complications of varicose veins. If the above conditions exist, it is recommended to consult a doctor for a clear diagnosis and targeted treatment in severe cases.