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Prosopometamorphopsia (PMO), [1] also known as demon face syndrome, [2] is a neurological disorder characterized by altered perceptions of faces. In the perception of a person with the disorder, facial features are distorted in a variety of ways including drooping, swelling, discoloration, and shifts of position.
The exact cause is unknown, but believed to involve loss of the myelin of the trigeminal nerve. [5] This might occur due to nerve compression from a blood vessel as the nerve exits the brain stem, multiple sclerosis, stroke, or trauma. Less common causes include a tumor or arteriovenous malformation. It is a type of nerve pain.
Hemifacial spasm (HFS) is a rare neuromuscular disease characterized by irregular, involuntary muscle contractions on one side (hemi-) of the face (-facial). [1] The facial muscles are controlled by the facial nerve (seventh cranial nerve), which originates at the brainstem and exits the skull below the ear where it separates into five main branches.
For example, when the person closes the eye, the corner of the mouth lifts involuntarily. Around 9% of people have some sort of ongoing problems after Bell's palsy, typically the synkinesis already discussed, or spasm, contracture, tinnitus , or hearing loss during facial movement or crocodile-tear syndrome. [ 50 ]
Other types of dystonia include writer’s cramp and neck dystonia, and both occur during active movements, Frankford says, like knee-jerk contractions in the fingers, hand, or forearm. What ...
Prosopagnosia, [2] also known as face blindness, [3] is a cognitive disorder of face perception in which the ability to recognize familiar faces, including one's own face (self-recognition), is impaired, while other aspects of visual processing (e.g., object discrimination) and intellectual functioning (e.g., decision-making) remain intact.
Bovine facies (or cow face) – craniofacial dysostosis or Crouzon syndrome; Marshall halls facies – hydrocephalus; Frog face – intranasal disease; Coarse facies – many inborn errors of metabolism; Adenoid facies – developmental facial traits caused by adenoid hypertrophy, nasal airway obstruction and mouthbreathing; really a form of ...
Parry–Romberg syndrome (PRS) is a rare disease presenting in early childhood [1] characterized by progressive shrinkage and degeneration of the tissues beneath the skin, usually on only one side of the face (hemifacial atrophy) but occasionally extending to other parts of the body. [2]