Facial paralysis is a loss of facial movement due to nerve damage. Your facial muscles may appear to droop or become weak. It can happen on one or both sides of the face. Common causes of facial paralysis include:. Depending on the cause, the paralysis might last for a short or extended period of time. This condition causes inflammation of the facial nerve, which commonly causes the muscles on one side of the face to droop.
NCBI Bookshelf. Katherine E. Westbrook ; Matthew Varacallo. Authors Katherine E. Westbrook ; Matthew Varacallo 1.
Figure 1. Standard electromyography tracings used for grading maximal voluntary corrugator and depressor anguli oris muscle amplitudes. Figure 2. Injection sites for the glabella and depressor anguli oris muscles. Circles and triangles represent 4 and 2 U each of onabotulinum toxin A, respectively.
CHICAGO - A minute daily or alternate-day facial exercise program sustained over 20 weeks improved the facial appearance of middle-aged women, resulting in a younger appearance with fuller upper and lower cheeks, reports a new Northwestern Medicine study. This is the first scientific study to test the premise of facial exercise improving appearance. As the face ages, skin loses elasticity and fat pads between the muscle and skin become thinner. The fat pads, which fit together like a jigsaw puzzle, give the face much of its shape.