Denture-related issues: Ill-fitting dentures, poor denture hygiene, or denture stomatitis can cause mouth pain in elderly women, especially if they wear dentures. This is a common issue due to the high prevalence of denture use in this age group.

Tooth decay or abscess: Elderly individuals may have difficulty maintaining good oral hygiene, leading to an increased risk of tooth decay and abscesses.
Gingivitis or periodontitis: Gum disease is common in older adults and can cause mouth pain, especially if left untreated.
Dry mouth (xerostomia): Decreased saliva production can lead to mouth pain, difficulty swallowing, and an increased risk of tooth decay. This condition is common in elderly women, especially those taking certain medications.
Oral lichen planus: A chronic inflammatory condition that can cause mouth pain, white patches, and redness in the mouth.

Oral cancer: Although less common, oral cancer can present with mouth pain, and it is crucial to rule out this diagnosis, especially in elderly individuals with a history of smoking or alcohol use.
Temporomandibular joint (TMJ) disorder: TMJ disorders can cause mouth pain, jaw pain, and difficulty chewing. While not typically life-threatening, missing this diagnosis can lead to significant morbidity.
Trigeminal neuralgia: A condition characterized by sudden, severe facial pain, which can be mistaken for mouth pain.

Burning mouth syndrome: A rare condition characterized by a burning sensation in the mouth, often without an identifiable cause.
Sjögren's syndrome: An autoimmune disorder that can cause dry mouth, mouth pain, and other systemic symptoms.
Erythema multiforme: A rare skin condition that can cause mouth ulcers and pain, often in response to an infection or medication.