Paralysis on one side of the face, loss of taste, dry mouth, and inability to close one eye are common symptoms of a facial paralysis called Bell’s Palsy. This is usually caused by damage or trauma to the facial nerve (Cranial Nerve VII).
Reference:
National Institute of Neurological Disorders and Stroke (2022, July 25). Bell’s Palsy. National Institute of Health. https://www.ninds.nih.gov/health-information/disorders/bells-palsy