Related Experiment Video
Updated: Oct 12, 2025

19:53
Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
Published on: March 1, 2015
106.0K
Approach to Facial Weakness
Yujie Wang1, Camilo Diaz Cruz1, Barney J Stern1
1Department of Neurology, Johns Hopkins University, Baltimore, Maryland.
Seminars in Neurology
|November 26, 2021
Summary
Facial palsy, often Bell's palsy, is a common neurologic issue. Treatment involves steroids and antivirals, with further tests for atypical cases to rule out infections or tumors.
Area of Science:
- Neurology
- Cranial Neuropathy
Background:
- Facial palsy is a frequent neurologic concern and the most common cranial neuropathy.
- The facial nerve governs motor, parasympathetic, and sensory functions.
- Idiopathic facial palsy, or Bell's palsy, is the most prevalent form.
Purpose of the Study:
- To outline the diagnostic and therapeutic approaches for facial palsy.
- To highlight differential diagnoses for facial weakness.
- To discuss potential complications and management of residual symptoms.
Main Methods:
- Review of clinical presentations of facial palsy.
- Discussion of diagnostic criteria for idiopathic cases.
- Consideration of investigations for atypical presentations.
Main Results:
- Classic Bell's palsy typically resolves with corticosteroids and antivirals.
- Atypical or concerning presentations warrant further investigation (e.g., imaging, CSF analysis).
- Differential diagnoses include infectious, inflammatory, and neoplastic causes.
Conclusions:
- Prompt recognition and management of facial palsy are crucial.
- Corneal protection is essential for at-risk individuals.
- Residual synkinesis can be managed with various therapeutic options.
Related Concept Videos
Disorders of the Skeletal Muscle
1.3K
The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
1.3K
Muscles for Facial Expressions
3.0K
The craniofacial muscles are a collection of approximately 20 thin skeletal muscles situated beneath the skin of the face and scalp. These muscles, primarily responsible for the vast array of human facial expressions, originate from the bones or fibrous structures of the skull and extend outwards to connect with the skin. While most skeletal muscles in the body are enveloped in thick fascia, facial muscles generally have a more delicate fascial covering, with the buccinator muscle being a...
3.0K
Prosopagnosia
375
Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
375
Myasthenia Gravis: Overview and Treatment
2.1K
Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which...
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which...
2.1K
Cranial Nerves: Types Part I
3.4K
Cranial nerves are responsible for transmitting motor and sensory information between the brain and various parts of the body. There are twelve pairs of cranial nerves, with the first six being essential in sensory perception, motor control, and autonomic functions related to the head and neck.
Olfactory Nerve (Cranial Nerve I)
The olfactory nerve, or cranial nerve I, is unique as it is purely sensory and dedicated to the sense of smell. This nerve originates in the olfactory epithelium of the...
Olfactory Nerve (Cranial Nerve I)
The olfactory nerve, or cranial nerve I, is unique as it is purely sensory and dedicated to the sense of smell. This nerve originates in the olfactory epithelium of the...
3.4K
Facial Feedback Hypothesis
304
Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role...
304

