Salivary Secretion Disorder

Dry mouth can arise despite adequate salivary flow, from reduced flow, or from altered saliva. Autoimmune disease, head and neck irradiation, surgical trauma and medicines can all disrupt secretion.

A secretion disorder can mean too little saliva, too much saliva, or difficulty clearing saliva from the mouth. Excess saliva can result from increased gland stimulation or reduced muscle coordination for swallowing.

Reduced saliva weakens buffering, antimicrobial activity, taste, digestion and tissue repair. It raises the risk of tooth decay and bacterial or fungal mouth infections.

Sialometry measures stimulated and unstimulated salivary flow. CT or MRI may be used when a salivary-gland growth is suspected, followed by biopsy if imaging identifies a suspicious lesion.

Care targets the cause of the secretion change, such as an autoimmune condition, medication effect, obstruction or infection. Treating the cause also addresses the oral effects of reduced or excessive saliva.

Flow measurement, salivary-gland imaging and biopsy are different diagnostic steps. CT or MRI is used when a gland lesion is suspected, while sialometry measures saliva production.

A persistent or worsening saliva-related problem may leave an infection, inflammation, obstruction, or another local cause unaddressed. Increasing pain, swelling, or difficulty swallowing needs timely clinical attention because those changes can alter the urgency and the treatment approach.

Protecting salivary function protects the mouth's natural buffering and antimicrobial activity. Avoiding a cause that reduces saliva, when possible, limits the oral effects of dry mouth.