Paroxysmal tingling in the thigh muscles may have the following causes. If the local environment or temperature is stimulated by cold, humidity, etc., it can lead to a transient or paroxysmal disorder of local blood circulation, also known as vasospasm, which can cause paroxysmal tingling symptoms in the local muscles of the thigh. There is also a possibility that the nerves that control the local muscles and skin sensation in the thigh have been squeezed or stimulated. For example, in patients with lumbar disc herniation or pear-shaped muscle syndrome, the stimulation and compression of the sciatic nerve causes paroxysmal tingling in the thigh. When the inflammation is aggravated, the tingling symptoms will be relatively obvious, and when resting, the symptoms will be relieved. When this symptom occurs, it is necessary to promptly conduct leg, lumbar, and hip-related examinations, and once diagnosed, actively treat the condition.