If you feel a hot current on your leg, first rule out whether it is due to nerve root compression, which can lead to abnormal sensations in the innervated area, which can be as varied as numbness, electrocution, or ants walking. In addition, there is a feeling of a hot current. Most of them originate from the compression of the nerve root, and the sensory abnormality of the innervated area occurs. If this kind of sensation occurs frequently, you can consider doing lumbar disc CT or lumbar disc magnetic resonance, to exclude whether there is a lumbar disc herniation on the nerve root compression, nerve root compression will often appear abnormal sensation of the lower limbs. It is also necessary to rule out the presence of nerve inflammation, which can sometimes lead to abnormal sensations in the skin in the area of innervation.