[Arguments against the pharmacotherapy of Bells' palsy]. / Tegen medicamenteuze behandeling van Bell-paralyse.

Bell's palsy is the most frequent type of peripheral facial paresis. Its cause is unknown. The prognosis is good in 85% of patients. Based on theories about its pathogenesis, antivirals and corticosteroids have been tried. In 6 studies with antivirals and 9 with corticosteroids (most ofthe studies were methodologically flawed), the efficacy of these treatments was not demonstrated.