The prognosis of sialadenitis depends on the etiology. If treatment is sought promptly, the prognosis tends to be good. Complete recovery may be expected after a strict outpatient management. The patient must follow all the norms suggested by the doctor. If there is any pain that is associated with acute bacterial sialadenitis, it is likely to settle after or within a week after being treated with antibiotics. Mild swelling, however, may still be present for a little longer. If sialoliths are treated surgically, the prognosis is worthwhile.
Symptoms of autoimmune sialadenitis tend to improve after adequate medical management of the underlying condition, such as in the case o Sjoren Syndrome.
The outcomes of the condition may sometimes be specific to the patients undergoing surgical treatment of chronic sialadenitis. Once superficial parotidectomy is done, there may be transient facial nerve palsy in almost one third to two-thirds of the patients. While the cosmetic deformity is normal and relatively minor, it may recur in up to 11 percent to 13 percent of the patients; favourably, not all of these patients need to be given further treatment. It is possible for patients to have a slightly higher risk of damage to the facial nerve, but this has not been demonstrated. The possibilities of the symptoms recurring are low.
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