Burning mouth syndrome (idiopathic)
Aphthous stomatitis
Herpes stomatitis
Candidiasis
Drugs causing xerostomia
Connective tissue disease causing xerostomia
Sjogren’s disease leading to xerostomia
Radiation therapy causing xerostomia
Chemotherapy causing xerostomia
Deficiencies: vitamin B12, Folate, Vitamin B6, iron, zinc
Allergic contact stomatitis
Geographic tongue
Denture-related pain
Diabetes
Thyroid abnormalities
Menopause
Lichen planus
Psychiatric disorders
Further Reading
Am Fam Physician. 2007 Feb 15;75(4):501-506. https://www.aafp.org/afp/2007/0215/p501.html