A general idea or understanding of something: the concept of inertia; the concept of free will. See Synonyms at idea. 2. A plan or original idea: The original concept was for a building with 12 floors. 3. A unifying idea or theme, especially for a product or service: a new restaurant concept.
Upper lip twitching is caused by a sudden involuntary contraction of the muscle or muscle fibers in the lips or as a result of direct stimulation or injury, according to Health Hype. Lip twitches also result from tics, spasms and tremors. They are usually benign, but sometimes indicate an underlying condition.
Symptoms of Lip Twitching. The symptoms of lip twitching are very evident. They can be felt as slight tremors which could radiate to the rest of your face as well. A person with lip twitching may also show the following symptoms: 1  Having involuntary or sudden contractions of your lip muscles. 2  Mild palpitation like movements especially on your upper lip. 3  A feeling of frozen lips or numbness. 4  A curling sensation of the edges of your lips.