Right calf bout suddenly occurring a hot stream can be caused by lumbar intervertebral disc herniation, lower extremity vascular disease, lower extremity infection, peripheral neuritis and other factors. 1. Lumbar intervertebral disc herniation: lumbar intervertebral disc herniation can lead to lumbar spinal nerve compression, which can cause numbness and pain in the innervated area of the lower limbs and other discomforts, and due to the position of the body and other factors, it may sometimes reduce the nerve compression, and the abnormal sensation similar to the heat flow can appear in the calf. 2. Lower extremity vascular disease: lower extremity arteriosclerosis occlusive disease, arterial embolism, varicose veins and other vascular diseases, can lead to lower extremity blood circulation disorders, when the posture of the leg changes or after treatment of blood circulation disorders relieved, due to the improvement of the blood supply and the emergence of a feeling similar to the heat flow. 3. Lower extremity infections: when infection occurs in the lower leg such as salpingitis, redness, swelling, heat, pain and other symptoms may appear locally, and there may be an abnormal performance similar to heat flow. 4. Peripheral neuritis: when peripheral neuritis occurs in the calf, especially when diabetic people combined with peripheral neuritis, due to the autonomic dysfunction of the calf, the sensation of heat flow through the local area and symptoms such as acidity, pain and so on. When the right calf burst suddenly a heat flow, need to consult a doctor in a timely manner, after a clear diagnosis and actively carry out the appropriate treatment, will help to relieve the discomfort symptoms as soon as possible.