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Supranuclear facial palsy

Facial nerve palsy is a neurological condition in which function of the facial nerve cranial nerve VII is partially or completely lost. It is often idiopathic but in some cases, specific causes such as trauma, infections, or metabolic disorders can be identified. Two major types are distinguished: central facial palsy lesion occurs between cortex and nuclei in the brainstem and peripheral facial palsy lesion occurs between nuclei in the brainstem and peripheral organs. Central facial palsy manifests with impairment of the lower contralateral mimic musculature. In contrast, peripheral facial palsy leads to impairment of the ipsilateral mimic muscles and also affects the eyelids and forehead. Additionally, peripheral facial palsy can cause various sensory and autonomic disorders depending on the exact location of the lesion.
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Facial nerve paralysis

Supranuclear facial palsy
Supranuclear facial palsy
Supranuclear facial palsy
Supranuclear facial palsy
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Facial Palsy - Physiopedia

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. Bell's palsy is the most common cause of acute facial nerve paralysis. There is no known cause of Bell's palsy, [3] [4] although it has been associated with herpes simplex infection.
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Facial nerve palsy

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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.
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