Dr. Oz said he often gets asked about twitches and twitching body parts from fingers, legs, arms, hands to eyelids. So how do you know if your twitch is something more serious?
Dr. Oz said that reflexes cause involuntary twitching. For example, when a doctor hits your knee and your leg sticks out straight, it is because you have a reflex that goes from your tendon to your spine, which then fires to your muscle and makes your leg stick out. Dr. Oz also used a Transcutaneous Electrical Nerve Stimulation (TENS) device to show how electricity can make your muscle in your arm spasm. Usually, a TENS device is used in an operating room to make sure that the patient is paralyzed before starting an operation.