Facial nerve paralysis is a common problem that involves the paralysis of any structures innervated by the facial nerve. The pathway of the facial nerve is long and relatively convoluted, so there are a number of causes that may result in facial nerve paralysis. Facial nerve paralysis is characterised by facial weakness, usually only in one side of the face, with other symptoms possibly including loss of taste , hyperacusis and decreased salivation and tear secretion. Other signs may be linked to the cause of the paralysis, such as vesicles in the ear, which may occur if the facial palsy is due to shingles. Symptoms may develop over several hours.
The Facial Nerve - Mark May, Barry M. Schaitkin - Google Книги
In this article, we shall look at the anatomical course of the nerve, and the motor, sensory and parasympathetic functions of its terminal branches. The course of the facial nerve is very complex. There are many branches, which transmit a combination of sensory, motor and parasympathetic fibres. The nerve arises in the pons , an area of the brainstem. It begins as two roots; a large motor root , and a small sensory root the part of the facial nerve that arises from the sensory root is sometimes known as the intermediate nerve. Here, they are in very close proximity to the inner ear. Still within the temporal bone, the roots leave the internal acoustic meatus, and enter into the facial canal.
The Facial Nerve (CN VII)
Facial nerve damage refers to a condition where the muscles that are controlled by the facial nerves no longer respond. This causes the person to not be able to move their face. Facial nerve damage can lead to partial or total paralysis of the face and can be upsetting for the person experiencing it. Below are common causes, symptoms, and treatment options for people who have experienced recent facial nerve damage.
Facial nerve palsy is the name given to the medical condition where the muscles to one side of the face become weak and partially or completely paralysed. This name may give rise to some confusion as, although the words facial and nerve are self-explanatory, the word palsy can have different meanings. It is widely used to describe uncontrollable movements such as tremors or shaking of parts of the body or even the whole body but, in this instance, its meaning specifically refers to the lack of movement or paralysis of certain muscles. The word palsy is regarded as being a spelling variation of the 13th-century English word parlesie which was derived from the old French word paralisie.