Facial nerve an incorrectly placed dental local-anesthetic (Inferior alveolar nerve block). Although giving the appearance of a hemi-plegic stroke, effects dissipate with the drug. When the facial nerve is permanently damaged due to a birth defect, trauma, or other disorder, surgery including a cross facial nerve graft or masseteric facial nerve transfer may be performed to help regain facial movement. Facial nerve decompression surgery is also sometimes carried out in certain cases of facial nerve compression. Voluntary facial movements, such as wrinkling the brow, showing teeth, frowning, closing the eyes tightly (inability to do so is called lagophthalmos) , pursing the lips
Emerging adulthood and early adulthood 25 years of age where adolescents become more independent and explore various life possibilities. Arnett argues that this developmental period can be isolated from adolescence and young adulthood. Emerging adulthood is a new demographic, is contentiously changing, and some believe that twenty-somethings have always struggled with "identity exploration, instability, self-focus, and feeling in-between". Arnett called this period "roleless role" because emerging adults do a wide variety of activities, but are not constrained by any sort of "role requirements". The developmental theory is highly controversial within the developmental field, and developmental psychologists argue over the legitimacy of Arnett's theories and methods.