How long a salivary gland problem lasts depends on the specific disorder.
Sialolithiasis. Small stones sometimes pass out of the duct on their own. However, larger stones usually stay in the gland until they are removed.
Sialadenitis. Symptoms usually begin to subside within 48 hours of treatment with antibiotics.
Viral infections. With mumps, symptoms usually last about 10 days.
Cysts. A small, shallow cyst can be a short-term problem that drains on its own. Large cysts often grow larger until they are removed surgically.
Tumors. Tumors last until they are removed.
Sjogren's syndrome. This is a lifelong illness.
Sialadenosis. Sialadenosis related to a medical problem generally persists as long as the medical problem does.