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.
There can be different causes of chapped lips. It can range from things such as the weather to a vitamin deficiency. The following are considered to be the more common causes for chapped lips. 1  Weather â The elements can cause of lips to dry out. 2  The winter can cause chapped lips because of its strong winds and cool temperature. 3  The summer can also affect our lips since too much exposure to the sun can make your lips chapped.