Burning Tongue Syndrome Diagnosis and Management

Initial Assessment and Diagnosis

The American College of Physicians recommends beginning with a thorough oral examination to identify visible mucosal lesions, followed by laboratory testing to exclude secondary causes, and considering tongue biopsy or referral if suspicious lesions are present, as most cases will be primary burning mouth syndrome (BMS) requiring neuropathic pain management 1, 2
The British Journal of Anaesthesia suggests documenting the onset, duration, and character of pain, as well as location specificity, to aid in diagnosis, with the tongue tip and anterior two-thirds being most commonly affected in BMS 3, 1
The American Academy of Otolaryngology-Head and Neck Surgery recommends assessing for traumatic factors, such as sharp edges of residual tooth roots/crowns, ill-fitting dentures, or thermal/chemical injury, and evaluating for candidiasis, which can cause oral burning symptoms 2

The American College of Physicians recommends essential blood tests, including complete blood count (CBC) with differential, iron studies, vitamin B12 level, fasting glucose and HbA1c, vitamin D 25(OH), and thyroid function tests (TSH, free T4), to identify underlying causes of burning tongue symptoms 2
The British Journal of Anaesthesia suggests that tongue biopsies may be necessary to rule out malignancy, especially in patients with unilateral pain, ulceration, or non-healing lesions, and to confirm the diagnosis of BMS 1

The American Academy of Otolaryngology-Head and Neck Surgery recommends reassurance and education, cognitive behavioral therapy (CBT), and pharmacologic options, such as gabapentin, alpha-lipoic acid, and topical clonazepam or diazepam, for the management of primary BMS 3, 1, 4
The American College of Physicians suggests addressing underlying causes, such as nutritional deficiencies, managing diabetes, controlling thyroid dysfunction, discontinuing offending medications, or treating candidiasis, for the treatment of secondary BMS 2

Post-herpetic neuralgia following herpes zoster can cause continuous burning, tingling, or itchy sensations at the site of previous infection, according to the British Journal of Anaesthesia 5
Post-traumatic trigeminal neuropathic pain can develop within 3-6 months following dental procedures or facial trauma, presenting as continuous burning or tingling, as reported by the British Journal of Anaesthesia 5
Pharmacological side effects from various medications can cause oral burning and must be reviewed in the medication history, as noted by the British Journal of Anaesthesia 5

Primary burning mouth syndrome commonly affects the tongue tip bilaterally, lips, palate, and buccal mucosa, with normal-appearing oral mucosa on examination, according to the British Journal of Anaesthesia 5
The condition is characterized by a continuous burning, stinging, or itchy sensation with severity ranging from mild to severe, as described by the British Journal of Anaesthesia 5
Primary burning mouth syndrome predominantly affects peri- and post-menopausal women, as reported by the British Journal of Anaesthesia 5