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Recurrent Bell's palsy etiology

Recurrent Bell's Pals

Recurrences of Bell's palsy - PubMe

  1. al distribution hypesthesias. Complete resolution of symptoms is usually seen within 2 months in 70% of cases, with 30% showing.
  2. Although the exact reason Bell's palsy occurs isn't clear, it's often related to having a viral infection. Viruses that have been linked to Bell's palsy include viruses that cause: Cold sores and genital herpes (herpes simplex) Chickenpox and shingles (herpes zoster
  3. Idiopathic facial paralysis is the acute mononeuropathy of the seventh cranial nerve, and it is recurrent in 2-9% of the cases [ 1, 2 ]. The first recurrence is usually observed within 10 years [ 1 ]. As the number of recurrences increases, the incidence rate decreases
  4. ation are key for early treatment. However, the etiology of Bell's palsy is unclear, and this affects its treatment

The cause of Bell's palsy is unknown. Swelling and inflammation of the cranial nerve VII is seen in individuals with Bell's palsy. Most scientists believe that reactivation of an existing (dormant) viral infection may cause the disorder The most significant factors in the evaluation of recurrent facial nerve palsy are medical history and physical findings at diagnosis and after short follow-up. In our patients, electrophysiological studies did not have either clinical or prognostic significance. The rate of full clinical recovery is about 70%, lower than in Bell palsy There is some research that shows that only about 7% of people with Bell's palsy syndrome have this luck to get it again. Disease tends to get back in intervals of 10 years. It may run in families like diabetes, for instance Melkersson-Rosenthal syndrome is defined by recurrent swelling (edema) of various facial features such as the upper lip, lower lip, one or both cheeks, eyelids, or rarely, one side of the scalp. It is also characterized by recurrent muscle weakness or paralysis (palsy) in the face and deep grooves or cracks (fissures) in the tongue The etiology, frequency and prognosis of recurrent Bell's palsy were studied in patients with peripheral paresis of n. facialis of various etiology. Fourteen (11.9%) of 117 patients with Bell's palsy had a recurrent paresis of n.facialis. Nine of these were of homolateral and five contralateral type

Is Bell's Palsy a Recurring Condition

  1. Bell's palsy is more common in patients with diabetes, and although it can affect persons of any age, incidence peaks in the 40s. Bell's palsy has been traditionally defined as idiopathic; however,..
  2. Recurrent Bell's palsy (RBP) has been reported to range from 2.6 to 15.2% of primary Bell's palsy (BP) and has been associated with systemic comorbidities such as diabetes and hypertension. A retrospective analysis of patients affected by BP and RBP were performed to define the signs and symptoms associated with recurrence and the outcomes
  3. As shown in Table I, there are several viral and bacterial agents which can cause a bilateral or recurrent facial palsy. It is hypothesised that Bell's palsy is caused by infection with herpes simplex virus (HSV). The best proof of this is given by Murakami et al.
  4. Bell's palsy, also referred to as idiopathic facial nerve palsy or facial nerve palsy of suspected viral etiology, is the most common cause of acute spontaneous peripheral facial paralysis
  5. Other causes of recurrent facial weakness such as hypothyroidism, herpes zoster oticus, Lyme disease, and Bell's palsy should be also considered in the differential diagnosis of MRS [ 1, 4 ]
  6. Recurrent Bell's palsy following ventriculoperitoneal shunt insertion: an unusual case to face. Kumaria A(1), Hammett TC(1), Sitaraman M(1), D'Aquino DA(1), Macarthur DC(1). Author information: (1)a Department of Neurosurgery , Queen's Medical Centre , Nottingham , UK
  7. The exact cause of Bell's palsy is not known. Viral (e.g., herpes zoster virus) and immune disorders are frequently implicated as a cause for this disorder. There may also be an inherited tendency toward developing Bell's palsy

Recurrent Bell's palsy Neurolog

Recurrent facial nerve paralysis is uncommon and few studies have evaluated this unique population. Recurrent ipsilateral and contralateral episodes are most commonly attributed to idiopathic facial nerve paralysis (i.e., Bell's palsy); however, a subset harbor neoplastic causes or local manifestations of underlying systemic disease Bell palsy, also termed idiopathic facial paralysis (IFP), is the most common cause of unilateral facial paralysis. It is one of the most common neurologic disorders of the cranial nerves (see the..

1. Introduction. Recurrent facial palsy is a relatively rare disease, accounting for 5.7-11.9% of all acute facial palsy cases [, , , , ].Several disease entities, such as idiopathic palsy (Bell's palsy), Ramsay Hunt syndrome, tumor, otitis media, multiple sclerosis, sarcoidosis, and Melkersson-Rosenthal syndrome, are known to cause recurrent facial paralysis Introduction Bell's Palsy, or Bell Palsy, is facial paralysis which is caused by dysfunction of Cranial Nerve VII, the Facial Nerve. Also known as Idiopathic Facial Palsy. It is named after Sir Charles Bell [1774 to 1842], who was a Scottish surgeon, neurologist and anatomist Bell's palsy occurs when the seventh cranial nerve becomes swollen or compressed, resulting in facial weakness or paralysis. The exact cause of this damage is unknown, but many medical researchers.. Recurrent Bell palsy is reported to occur in 6.5% of patients (range 0.8-19.4%), with multiple recurrences rare. Recurrence can be ipsilateral or contralateral to the original episode. The mean time to recurrence is ~10 years (range 7.8-11.2 years), although ~50% experience recurrence within 5 years 12 Facial nerve palsy is a common malady in children that may be congenital or acquired. The underlying etiology often remains unclear despite extensive investigation. In 1830, Sir Charles Bell first described unilateral facial weakness secondary to facial nerve dysfunction. His description of acquired, idiopathic facial paralysis is often termed.

Bell's palsy - Symptoms and causes - Mayo Clini

  1. Common facial paralysis causes include: Bell's Palsy: Bell's palsy is one of the leading half face paralysis causes. It results in inflammation of the facial nerve, leading to facial drooping and weakness on one side of the face. Stroke: A stroke can damage brain nerves used to control facial muscle movement. Head or Neck Tumor: A head or.
  2. Bell's palsy is a form of temporary facial paralysis which results from damage or trauma to one of the facial nerves. This disorder is characterized by the sudden onset of facial paralysis that often affects just one side and can cause significant facial distortion. Symptoms vary, but may include twitching, weakness, drooping eyelid or corner.
  3. The etiology of Bell's palsy is unknown; however, numerous theories have been proposed. Of the many theories offered, herpes simplex virus type 1 (HSV-1) or herpes zoster virus reactivation is the most favored. Several investigators have identified HSV-1 in facial nerve or in tissue innervated by the facial nerve in patients with Bell's palsy
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  5. The etiology, frequency and prognosis of recurrent Bell's palsy were studied in patients with peripheral paresis of n.facialis of various etiology. Fourteen (11.9%) of 117 patients with Bell's palsy had a recurrent paresis of n.facialis. Nine of these were of homolateral and five contralateral type
  6. RECURRENT cranial-nerve palsies have been described in such disorders as diabetes mellitus, migraine, demyelinating diseases, aneurysms and myasthenia gravis. A lesser known entity is recurrent par..
  7. Bell palsy recurs in 4-14% of patients, with one source suggesting a recurrence rate of 7%. It may recur on the same or opposite side of the initial palsy. Recurrence usually is associated with a.

Recurrent Bell's palsy is rare, but can occur in individuals susceptible to changes in ambient pressure. How might this improve emergency medicine practice? Distinguishing a benign facial palsy from a more serious etiology in a low resource setting, such as during a commercial flight, could prevent costly flight diversion and calm passenger. A case of recurrent Bell's palsy occurring in two successive pregnancies in a 37-year-old woman is presented. The causes of facial nerve paralysis of the lower motor neurone type are discussed. The rate of recurrence of Bell's palsy during pregnancy is unknown

Bell's palsy is an unexplained episode of facial muscle weakness or paralysis. It begins suddenly and worsens over 48 hours. This condition results from damage to the facial nerve (the 7th cranial nerve). Pain and discomfort usually occur on one side of the face or head. Bell's palsy can strike anyone at any age weakness/paralysis for Bell's palsy, the following should be considered: Bell's palsy is rapid in onset (<72 hours). Bell's palsy is diagnosed when no other medical etiology is identified as a cause of the facial weakness. Bilateral Bell's palsy is rare.13,14 Currently, no cause for Bell's palsy has been identified

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. The most common is Bell's palsy, a disease of unknown cause that may only be diagnosed by exclusion of identifiable serious causes This is reiterated in the 2009 case report Familial Recurrent Bell's palsy conducted by researchers from the Department of Neurology, Zhejiang University, Hangzhou, China. Three families in which eight patients had a total of 12 episodes of typical Bell's palsy were recorded in a bid to find the etiology of the condition Bell's palsy is characterized by rapid onset, lower motor neuron facial deficit, and can be unilateral, partial or complete paralysis of the face. Although the exact cause of Bell's palsy is unclear, it has been hypothesized that it is due to a viral infection which causes inflammation, swelling, and damage to the facial nerve Bell's palsy causes temporary paralysis, or palsy, of facial muscles. It occurs when a condition, such as a viral infection, causes inflammation and swelling of the seventh cranial nerve (the nerve that controls facial muscles)

Recurrent Idiopathic Facial Paralysis: A Case Report

  1. Bell's palsy (BP) is a unilateral facial paralysis resulting from lower motor neuron involvement of Cranial Nerve VII. 1 While the exact pathogenesis is unclear, BP is thought to occur from inflammation and swelling of the facial nerve at the geniculate ganglion, which can cause compression and ischemia or demyelination of the nerve. 2,3 The.
  2. Bell's palsy is a peripheral facial palsy of sudden onset. The etiology of Bell's palsy is unknown and hereditary components may play a role in familial recurrent Bell's palsy. We report three families in which eight patients had a total of 12 episodes of typical Bell's palsy. The pathophysiology of familial recurrent Bell's palsy is discussed
  3. Bell's palsy is a type of facial paralysis that results in a temporary inability to control the facial muscles on the affected side of the face. Symptoms can vary from mild to severe. They may include muscle twitching, weakness, or total loss of the ability to move one, and in rare cases, both sides of the face. Other symptoms include drooping of the eyelid, a change in taste, and pain around.
  4. Introduction . Bilateral facial nerve palsy (FNP) is a rare condition, representing less than 2% of all cases of FNP. Majority of these patients have underlying medical conditions, ranging from neurologic, infectious, neoplastic, traumatic, or metabolic disorders. Objective . The differential diagnosis of its causes is extensive and hence can present as a diagnostic challenge
  5. Bell's palsy causes weakness or paralysis of the muscles on one side of the face. It tends to occur due to a malfunction of the facial nerve, usually caused by the herpes virus. Bell's palsy is.
  6. Melkersson-Rosenthal syndrome (MRS) was first described and named after E. Melkersson in 1928 and C. Rosenthal in 1931. MRS is a rare cause of recurrent facial nerve palsy and can manifest as facial paralysis, orofacial edema, and/or tongue fissuring. Presenting with the complete triad, it was scarcely reported in literature. However, the patient reported here had the complete triad

The etiology of Bell's palsy: a review SpringerLin

Those who fail to recover should be advised to see their own GP and need ENT referral for exclusion of other causes. Refer. Any doubt regarding the diagnosis. Recurrent Bell's palsy. Bilateral Bell's palsy. If the cornea remains exposed after attempting to close the eyelid, refer urgently to ophthalmology Recurrent Bells palsy has been reported in 2-9% of all cases. Other causes of recurrent facial palsy are underlying tumour, Behchets syndrome, Lyme disease, hypertension, Ramsay Hunt syndrome, Melkersson-Rosenthal syndrome, or familial occurrence [5]. The diagnosis of sarcoidosis is based on a compatible clinical and/or radiological picture.

Peitersen E. Bell's palsy: the spontaneous course of 2,500 peripheral facial nerve palsies of different etiologies. Acta Otolaryngol Suppl. 2002. 4-30. . Liu J, Li Y, Yuan X, Lin Z. Bell's palsy may have relations to bacterial infection. Med Hypotheses. 2009 Feb. 72(2):169-70. Idiopathic Bell's Palsy can be the cause of bilateral facial palsy, but other causes such as Lyme Disease, neurosarcoidosis, Guillain-Barre Syndrome, Melkerssohn-Rosenthal Syndrome, meningitis, leukaemia, tumours and basilar skull fractures must be considered and excluded as causes before a diagnosis of Bilateral Bell's Palsy is given Other Causes of Bell's Palsy Bell's palsy is a known result of a viral infection . There is evidence to show that recurring viral infections can inflame facial nerves, and result in Bell's palsy Introduction. A facial palsy is weakness or paralysis of the muscles of the face. Whilst the majority of cases are idiopathic, termed Bell's Palsy, there are a wide range of potential causes of a facial palsy.. Bell's palsy is a diagnosis of exclusion and hence all possible causes have to be excluded first prior to diagnosing Bell's palsy. The majority of this article will discuss Bell. Most people with Bell's palsy recover fully — with or without treatment. There's no one-size-fits-all treatment for Bell's palsy, but your doctor may suggest medications or physical therapy to help speed your recovery. Surgery is rarely an option for Bell's palsy. Medications. Commonly used medications to treat Bell's palsy include

Bell's Palsy Fact Sheet National Institute of

Bell's palsy has been associated with a chronic middle ear infection, high blood pressure, Lyme disease, diabetes, and tumor. 1. High blood pressure can often result in Bell's palsy and can cause one side of the face to droop or paralysis of the face. 2. Bells palsy will recover completely, and it typically begins 2 weeks to 6 months from. Signs and Symptoms of Bell's Palsy. As many of the signs and symptoms of Bell's palsy present similarly to those of a stroke, it is imperative that you seek medical attention immediately to rule out a more serious and potentially life-threatening condition.. Many people experience an odd, Novocain-like numbness and paralysis in the lips, face and eye — like you've just left the dentist. The outcome for a person with Bell's palsy can be dependent on getting the correct treatment within 72 hours. The largest scale recent study [2] of Bell's palsy demonstrated that without the recommended treatment with steroids, only 57% achieved full recovery at 12 months. Even with timely treatment, only 72% of patients achieved full. Causes of Bell's Palsy. Bell's palsy is caused by swelling of the seventh cranial nerve as it passes through a narrow, bony passage. It presses on the bone, and the nerve loses function. Doctors don't know what causes the nerve to swell, but they believe that an existing but dormant viral infection could be to blame

Recurrent facial nerve palsy in paediatric patient

Objective . To describe a unique case of familial Bell's palsy and summarize the current literature regarding possible hereditary influences. Design . Case report. Main Outcome Measures . Clinical exam, CSF analysis, and family history provided per the patient. Results . We report the case of a 58-year-old female who presented with recurrent and bilateral episodes of facial palsy Bell's Palsy. Bell's palsy is a neurological disease that causes paralysis or weakness in the facial muscles. As a result, it makes half of the afflicted's face seem droopy. Other issues include trouble closing the weakened side's eye, the inability to smile on the droopy side of the face, loss of the ability to taste, drooling, and. Bell's palsy is the most common type of facial nerve paralysis, though it's not clear what causes it.Experts think it may result from a viral infection that leaves your facial nerve inflamed. Facial muscles — usually on just one side of your face — become weak or unable to move 1. Introduction. Bell's palsy, or idiopathic facial paralysis (IFP), accounts for approximately 60-80% of lower motor neuronal facial palsies [] and has an incidence of 20-30 cases per 100,000 people per year [].Incidence is highest in the 15-45 year age group and increases in pregnancy and diabetes [].In the vast majority of cases, it is self-limited, nonprogressive, and spontaneously. Bell's palsy is rare in children, and most children who are affected make a full recovery without treatment. How long Bell's palsy lasts. Most people make a full recovery within 9 months, but it can take longer. In a small number of cases, the facial weakness can be permanent. Go back to see a GP if there are no signs of improvement after 3 weeks

Bell's palsy is the commonest cause of facial palsy, accounting for approximately 80 per cent of all cases. It affects between 20 per 100,000 to 30 per 100,000 people per year. It is difficult to know the exact incidence of Bell's palsy as not all people with the condition are diagnosed or recorded. The average GP will see a case every 2 years Facial palsy. Dr Mostafa El-Feky and Dr Zishan Sheikh et al. Facial palsy refers to the neurological syndrome of facial paralysis. It can result from a broad range of physiological insults to the facial nerve or its central nervous system origins. The most common causes of this is Bell palsy Bell's palsy is a paralysis or severe weakness of the facial nerve on one side of your face, understood to be caused by a swelling of the nerve that controls the face muscles. What causes that swelling, though, varies and may not always be known. Often appearing in the mornings and sometimes lasting throughout the day into weeks, Bell's. Bell's palsy. People who have previously had Bell's palsy may receive a COVID-19 vaccine. Cases of Bell's palsy were reported following vaccination in participants in the COVID-19 vaccine clinical trials. However, the Food and Drug Administration (FDA) does not consider these to be more than the rate expected in the general population Bell's Palsy & Chronic Ebstein-Barr Virus Infection Symptom Checker: Possible causes include Infectious Mononucleosis. Check the full list of possible causes and conditions now! Talk to our Chatbot to narrow down your search

recurrent bell's palsy Nervous System Disorders and

  1. Daily Strength Bells Palsy Support; The Creative Junkie; The Liddle Spoon; Fitgirl Video Updates (so helpful to many) The Bell's Palsy Network; Running Towards Normal; Impersonating Normal; Categories. bells palsy ramblings (27) military life (2) miscellaneous ramblings (16) tales of teaching (6) Archives. March 2012 (1) November 2011 (1.
  2. Causes Bell's palsy. Bell's palsy is the most common cause of acute facial nerve paralysis (>80%). Previously considered idiopathic, it has been recently linked to herpes zoster of the facial nerve (rarely Lyme disease). Bell's palsy is an exclusion diagnosis. Some factors that tend to rule out Bell's palsy include: Recurrent paralysi
  3. I have had Bells Palsy for 1 year and 2 months. i also have this bell's palsy but the only thing we can do is ask god for help This topic is answered by a medical expert. Causes of cerebral palsy ; View more recurrent bell's palsy bells palsy eye twitching reflexology for Bell's Palsy
  4. Addisons-disease & Dyspnea & Facial-palsy Symptom Checker: Possible causes include Sarcoidosis. Check the full list of possible causes and conditions now! Talk to our Chatbot to narrow down your search
  5. ent in people over 40 or those with diabetes, upper respiratory disorders, weakened immune systems and.

Video: Melkersson-Rosenthal Syndrome - NORD (National

The etiology of Bell's palsy is unknown and hereditary components may play a role in familial recurrent Bell's palsy. We report three families in which eight patients had a total of 12 episodes of typical Bell's palsy. The pathophysiology of familial recurrent Bell's palsy is discussed This report describes the rare association of recurrent episodes of facial paralysis and intracranial tumor, and documents the seventh such case in medical literature. Report of a Case A 38-year-old garment worker was admitted to the Neurological Institute of New York in May 1964, because of increasingly recurrent attacks of visual blurring for. Objective: A rare case of possible hereditary predisposition to autoimmune neuropathyBackground: This case report is of a patient who presented two episodes of Facial paresis in her live without ascertained apparent causes. Bell's palsy is commonly known as peripheral idiopathic facial nerve palsy, because in the most cases the triggers remain unknown (1).Case Report: I want to present a. Although the exact etiology of Bell's palsy is unknown, there is some evidences that implies there may be some relation between vasospasm, from any cause, along any facial nerve branch, with Bell's palsy. There is no established association between genetic factors and Bell's palsy. Hereditary components may play a role in familial recurrent. Bell's palsy is the most common cause of a lower motor neurone facial weakness with an incidence of between 11 and 40 per 100 000 per year; its cause is unknown.3 4 This combination—being the most common and being of unknown cause—has led to the term 'Bell's palsy' being used incorrectly as a synonym for lower motor neurone facial.

Recurrent bell's palsy SpringerLin

Bell's palsy is characterised by an acute onset of unilateral, lower motor neuron weakness of the facial nerve in the absence of an identifiable cause. 1 The annual incidence is estimated to be 11-40 per 100,000, with a lifetime risk of one in 60. On average, general practitioners (GPs) encounter one acute case every two years. 2 Most cases of Bell's palsy resolve spontaneously For detailed information regarding the etiology and clinical features of Bell's palsy, please refer to the EyeRounds article Facial Nerve Palsy: Ocular Complications and Management [1]. Care should be taken to differentiate Bell's palsy from Ramsey Hunt syndrome, which is characterized by otalgia and the presence of a vesicular rash on the. Causes of Facial Palsy. iral and bacterial infections, as well as autoimmune disorders, appear to be emerging as the most frequent common thread in the etiology of Bells palsy. HERPES SIMPLEX 1. As far back as 1970, Herpes Simplex 1 was suggested as a cause of Bell's palsy (Dr. Kedar Adour) Cohn's diseas.Other causes of recurrent facial weakness such as hypothyroidi,pes zoster oticus, Lyme diseas,Bell's palsy should be also considered in the differential diagnosiMRS[1 , 4]. We report a 25-year-right-,emale patient who was referred to our neurology outpatient clinic in TAeSpecializeHospital with a complaint Open Access 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.

PPT - Facial, Dental, Ear, Nose, and Throat Emergencies

Bell palsy recurs in 4-14% of patients, with one source suggesting a recurrence rate of 7%. It may recur on the same or opposite side of the initial palsy. Recurrence usually is associated with a family history of recurrent Bell palsy Bell's palsy, also called facial palsy, is a disorder caused by damage to the facial nerve, the nerve that supplies the muscles of the face. This damage causes partial or total paralysis of one side of the face. No one is certain why Bell's palsy occurs, but it may be due to a virus such as herpes simplex, the common cold sore virus Bell's Palsy Causes. Most doctors believe that it's due to damage to the facial nerve, which causes swelling. This nerve passes through a narrow, bony area within the skull. When the nerve. Introduction. Acute facial nerve paralysis, or Bell's palsy, has long been acknowledged as one of the most common forms of paralysis in human beings. 1, 2 The incidence of this condition in Western countries has been estimated at between 13-34/100,000 people per year. 3 Since it was first described by Sir Charles Bell in 1821, 4 attempts to find the exact cause of the problem have been. Bell's palsy is an isolated lo wer motor neuron lesion of the whole facial nerve. The cause is usually unknown. Most children recover completely. Assessment of Bell's palsy is aimed at confirming the diagnosis and excluding the other important causes of facial weakness. History and examination. Ask about the evolution of weakness

PPT - Facial Nerve PowerPoint Presentation, free downloadFacial Nerve Disorders | Ento Key

Facial nerve palsy is the most common cranial nerve disease. Its idiopathic form (Bell's palsy) accounts for 60-75% of cases. 7-40 cases arise per 100 000 persons per year; the incidence is. Bell's Palsy is a condition that causes the muscles on one side of your face to droop or become stiff, either as a result of weakening or paralysis of the facial nerve (seventh cranial nerve). The facial nerve controls the muscles of facial expression, eyelid and forehead movement, and carries sensations from the taste buds on the anterior. Bell's palsy the commonest form of facial paralysis is diagnosed mostly on history and features which suggest a sudden onset probably after exposure to cold or may be due to trauma which may cause transudation leading to compression of facial nerve. The details of the feature is given at Bell's Palsy. Diagnosis of Bell's Palsy There are reports of familial recurrent Bell's palsy in the literature. One analysis of 25 patients with Bell's palsy found 4% had a family history with a mode of inheritance thought to be.

Facial paralysis

KurŁa E. et al. Recurent Bell™s palsy Repeated BP in one person merits attention. Recurrent paralyses are noted in 7% - 8% of BP cases6. Yanagihara et al.4 report on a higher prevalence of unilateral BP recur-rence in women under 19 years of age, however, there were no convincing sex differences in other studies. Paralysi Bell's palsy is a nerve condition that causes partial or complete weakness of one side of the face. The symptoms—like a sagging eyebrow or drooping mouth—come on suddenly, and typically resolve over the course of a few weeks or months. While it's usually difficult to pinpoint a cause, viral infections can trigger Bell's palsy

Bell's palsy is a sudden or rapid onset facial paralysis or weakness which develops over hours to a day or two. If the face takes longer than 2-3 days to become paralyzed, the disorder is probably not Bell's palsy and other causes need to be considered. Bell's palsy, was formerly thought to be idiopathic or without known cause Understanding Bell's Palsy and how is it caused. Bell's Palsy is a condition in which one's 7 th cranial nerve (aka facial nerve) suffers damage or trauma, resulting in muscle weakness or paralysis. The facial nerve is connected to the muscles on one side of the face that control facial expressions, as well as blinking and closing your eye Bell's palsy causes muscle weakness, which usually affects one side of the face. This results in drooping on one side of the face. People with Bell's palsy commonly have a lopsided smile and difficulty closing their eyelids properly. Other Bell's palsy symptoms can include facial pain, excessive tearing, and altered or lack of sense of taste