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.
Herpes simplex infection of the lips (cold sore / fever blisters) Other causes for persistent twitching are: Bellâs palsy. a condition with temporary weakness or paralysis of the muscles of one side of the face due to damage or trauma to the nerve supplying the facial muscles (facial nerve) [5,6].