Professional Reference articles are designed for health professionals to use. You may find the Bell's Palsy article more useful, or one of our other health articles. Bell's palsy lower motor neurone facial palsy ; idiopathic facial paralysis IFP. Damage to the facial nerve - either upper motor neurone UMN or lower motor neurone LMN - produces weak muscles of facial expression.
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Central facial palsy 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 dorsal division receives bilateral upper motor neuron input (i.e. from both sides of the brain) while the ventral division. It is an idiopathic, acute peripheral-nerve palsy involving the facial nerve, which whereas the neurones to the upper face receive bilateral UMN innervation.
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A facial palsy is weakness or paralysis of the muscles of the face.
Half of facial paralysis in children is idiopathic at origin. However, dismissing facial paralysis as being idiopathic without a thorough history and meticulous examination could be disastrous as illustrated by this case. We report a case of sphenoid wing meningioma in a 4-year-old girl. She first presented with only facial asymmetry that was noticed by her mother. Examination suggested a left upper motor neuron facial nerve palsy. A sphenoid wing meningioma was found on magnetic resonance imaging MRI of her brain.