Central facial palsy colloquially referred to as central seven is a symptom or finding characterized by paralysis or paresis of the lower half of one side of the face. It usually results from damage to upper motor neurons of the facial nerve. The facial motor nucleus has dorsal and ventral divisions that contain lower motor neurons supplying the muscles of the upper and lower face, respectively. The dorsal division receives bilateral upper motor neuron input i. Thus, lesions of the corticobulbar tract between the cerebral cortex and pons and the facial motor nucleus destroy or reduce input to the ventral division, but ipsilateral input i.
Facial nerve palsy
[A young woman with central facial nerve palsy].
Isolated facial muscle weakness is an uncommon presentation to the ED and may be quickly diagnosed by the unwary as Bells palsy. The Emergency Physician must be aware of two potential pitfalls when presented with a patient with facial weakness:. Bells palsy is defined as an acute idiopathic peripheral facial nerve paresis and is the most common cause of acute peripheral facial weakness . It has an incidence in the UK of approximately 20 cases per ,00 person years , in other words around 50 cases per year will occur in an average ED catchment area. Although named after the Scottish anatomist Sir Charles Bell, the palsy was first described 23 years earlier by Nicolaus Friedreich , grandfather of the more famous neurologist. Common sequelae found in those that fail to recover are:.
Central facial palsy
Donika K. Kerry H. Address: Donika K.
Facial nerve 7th cranial nerve palsy is often idiopathic formerly called Bell palsy. Idiopathic facial nerve palsy is sudden, unilateral peripheral facial nerve palsy. Symptoms of facial nerve palsy are hemifacial paresis of the upper and lower face. Tests eg, chest x-ray, serum angiotensin-converting enzyme [ACE] level, tests for Lyme disease, serum glucose are done to diagnose treatable causes.