Bell's palsy affects about the same...

Bell's palsy affects about the same in 60 persons and has an annual incidence of around 20 by 100,000 persons. Overall, the condition is mostly common in persons 15 to 45 years of age, moreover the incidence is particularly high in pregnant women (45 by 100,000). Holland and Weiner outlined late developments concerning the management of Bell's palsy.

Although still somewhat controversial, evidence is accumulating that reactivated herpes viruses (simplex representation 1 or zoster) in cranial courage ganglia are the most everyday cause of Bell's palsy. Conditions caused at the herpes zoster virus may be more plain than those caused by herpes simplex virus impressed sign 1.

Patients usually are alarmed by the agency of the sudden onset of Bell's palsy symptoms, which include facial weakness accompanied through change in taste sensation, hyperacusis, and decreased lacrimation. more [i]or[/i] less patients report ear pain or fullnes before the paralysis. censorious pain is more typical of herpes zoster infections. Examination of a patient with Bell's palsy indicates impaired facial and platysma muscles causing drooping of the entrance and brow plus difficulty closing the view or mouth. The patient should be examined for evidence of other causes of lower facial weakness of the like kind as intracranial or parotid lesions or Lyme disease. Laboratory examples are not helpful in diagnosis exclude to exclude other potential causes of facial weakness.

Approximately 75 percent of patients win back fully from Bell's palsy, and 10 percent have minor sequelae. About united sixth of patients have residual moderate to accurate weakness, contracture, spasm, or synkinesis. In patients who do not receive treatment, chiefly improvement occurs within three weeks. Additional improvement is delayed for the four to six month required for fortitude regeneration. Although prognosis cannot be predicted accurately, factors associated with poor result have been identified in the accompanying table.

The goals of treatment are to accelerate regaining and prevent or minimize complications. Patients may require considerable reassurance and support during this illness. The vigilance should be protected from drying at hourly use of lubricating pendants while awake and eye ointment at night. Massage, facial exercises, and biofeedback can contribute to improvement if it were not that have not been studied extensively. Steroids have been shown to increase the proportion of patients with profitable outcome by 17 percent if used within seven days of symptom attack Antiviral agents, such as acyclovir (Zovirax), are increasingly attract favor toed in combination with steroids because of the accumulating evidence of a viral etiology of Bell's palsy. Because acyclovir has subdued bioavailability, studies are focusing forward valacyclovir (Valtrex) and famciclovir (Famvir). united prospective controlled study showed enhanced redemption when valacyclovir was combined with prednisone. The issue was particularly noticeable in older patients. Ideally, patients should begin treatment within 72 hours of symptom attack Surgical decompression is reserved for rare cases because of danger of adverse effects

The authors infer that patients with Bell's palsy should begin treatment immediately and be referr to a subspecialist. Patients with significant sequelae should be referr for multidisciplinary management that could include injections of botulinum toxin, facial reanimation, and cosmetic surgery

Holland NJ Weiner GM late developments in Bell's palsy. BMJ September 4 2004;329:553-7

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