The following information may help to address your question:
Some cases of Bell's palsy are mild and do not require treatment. In these cases, symptoms may subside on their own within 2 weeks. For those cases that do require treatment, steroids such as prednisone have been used with success to reduce inflammation and swelling. Other medications such as acyclovir --used to fight viral infections -- may shorten the course of the disease. Analgesics such as aspirin, acetaminophen, or ibuprofen may relieve pain. Because of possible drug interactions, patients should always talk to their doctors before taking any over-the-counter medicines. Keeping the eye moist and protected from debris and injury is important. Other therapies such as physical therapy, facial massage or acupuncture may also be used. In general, decompression surgery for Bell's palsy is controversial and is seldom recommended.
The prognosis for individuals with Bell's palsy is generally very good. The extent of nerve damage determines the extent of recovery. With or without treatment, most individuals begin to get better within 2 weeks after the initial onset of symptoms and recover completely within 3 to 6 months. For some, however, the symptoms may last longer. In a few cases, the symptoms may never completely disappear. In rare cases, the disorder may recur, either on the same or the opposite side of the face.