Feeling some numbness in the right leg may be due to the following disease causes: 1. The most common disease cause is lumbar disc herniation, which causes nerve roots to be irritated due to backward and outward compression after lumbar disc herniation. Once the nerve roots are provoked, it will lead to abnormal sensations in the legs, such as pain or numbness. The numbness of the right leg is considered to be the compression of the nerve root on the right side. In the acute stage, it is necessary to lie strictly flat on a hard bed with lumbar 3D computer therapy.2. The common cause of numbness in the right leg is dermatomal neuritis of one of the nerves in the right lower limb, so it can lead to numbness and abnormal sensation in the lower limb.