Weboct 24, 2023 · hemifacial spasm is a disorder of the nerves and muscles that causes nonpainful involuntary twitching on one side of the face. Many people refer to hemifacial. Weboct 27, 2015 · also known as lip fasciculation, lower lip twitching refers to sudden and involuntary abnormal contractions of the bottom lip muscles. It can also occur due to. Webaug 18, 2024 · lip twitching, a common yet often misunderstood phenomenon, can be a subtle signal from your body that something isn’t quite right. While it’s easy to dismiss. Webjun 28, 2023 · hemifacial spasm is a nervous system condition in which the muscles on one side of the face twitch. The cause of hemifacial spasm is most often a blood vessel.