why is my mouth producing so much saliva suddenly

The sudden increase in saliva production, known as hypersalivation or sialorrhea, can occur for multiple reasons. Common causes include dietary triggers like acidic, spicy, or sugary foods; medication side effects; oral infections or irritations; gastroesophageal reflux disease (GERD); hormonal changes such as those during pregnancy; and neurological conditions affecting saliva control. This condition can be temporary or chronic depending on the underlying cause. It may also be caused by mouth muscle weakness or difficulty swallowing saliva effectively. If the saliva increase is sudden and persistent, it may warrant consulting a healthcare professional for diagnosis and treatment. Most causes are treatable once identified.