There is a brief article in Dr. Ben Kim's newletter today on twitching eyelids. The following is a cut and paste of the summation of the article. ___________________________________________________________ Aside: in clinical terms, your brain, brain stem, and spinal cord are referred to as upper motor neurons. Your peripheral nerves - the temporal branch of your facial nerve in this example - are referred to as lower motor neurons. Twitching eye muscles are referred to as fasciculations and are a common sign of lower motor neuron problems, which usually get better on their own with proper rest and a healthy diet.