Numbness and tingling in the thighs are treated according to the causes, common causes include prolonged squatting, lumbar disc herniation and neuritis, etc. The treatments include changing postures, bed rest, traction and medication. 1. Prolonged squatting: prolonged squatting will compress the sciatic nerve and blood vessels, so that the blood supply is insufficient, and the symptoms of numbness and tingling in the thighs will appear, and can be recovered after changing the posture. 2. Lumbar disc herniation: the protruding intervertebral disc compresses or stimulates the sensory nerves innervating the thighs, numbness and tingling in the thighs may occur, and bed rest is needed, and under the guidance of a doctor, traction therapy to make the discs recede may alleviate the numbness and tingling symptoms. 3. Neuritis: Inflammation of the sensory nerves innervating the thighs may cause numbness and tingling, and vitamin B1, methylcobalamin and other nerve-nourishing drugs can be taken. Numbness and tingling in the thighs may have other reasons, if after resting the improvement is not obvious should promptly go to the regular hospital, the doctor according to the condition of the specific cause of the disease, for the cause of the regular treatment, the above drugs should be taken under the guidance of a doctor.