Acquired and isolated asymmetrical palatal palsy.
Benign acquired and isolated asymmetrical palatal palsy is a rare condition in childhood. We report on three cases. Typical features include: sudden onset, abnormality of the palatal components of speech (rhinolalia), nasal escape of fluids from the ipsilateral nostril. It is supposed to be caused by viral infection, but attempts at viral isolation were unsuccessful. Complete spontaneous recovery is usual, taking a few weeks. Our paper seems to be the first report of magnetic resonance imaging of the brain in this condition. It did not disclose any abnormalities in the 2 cases in which it was performed.