Burning Mouth Syndrome with Psychological Comorbidities
A 62-year-old postmenopausal woman presents with a 1-year history of burning pain in her tongue, lips, and palate. The pain is bilateral, constant, and worst in the evening. She has dry mouth and taste alterations. She reports significant stress due to caring for her husband with dementia. She has a history of depression and takes sertraline 50 mg daily. Examination reveals no oral mucosal lesions, normal saliva flow, and normal blood tests including CBC, ferritin, vitamin B12, folate, zinc, and thyroid function. She has not had a glucose tolerance test.
1. What is the most likely diagnosis, and what further evaluation is needed?
Read the worked answer
The most likely diagnosis is burning mouth syndrome (BMS), a chronic intraoral pain condition without identifiable organic cause. It is common in postmenopausal women and often associated with psychological distress. The normal oral exam and lab tests support this. However, secondary causes must be ruled out: diabetes (via HbA1c or glucose tolerance test), autoimmune conditions (e.g., Sjögren's, though she lacks dry eyes), and nutritional deficiencies (already normal). A trial of topical clonazepam or low-dose antidepressants may be diagnostic. Psychological evaluation for depression and anxiety is warranted, as BMS is often comorbid with mood disorders. The temporal relationship with stress and evening worsening (common in BMS) supports the diagnosis.
2. Discuss the role of psychological factors and propose a multidisciplinary treatment plan.
Read the worked answer
Psychological factors play a significant role in BMS; stress, anxiety, and depression can exacerbate symptoms. The patient's caregiving stress and history of depression are relevant. Treatment should be multidisciplinary: (1) Pharmacologic: consider topical clonazepam (0.5 mg dissolved in mouth) or systemic medications like amitriptyline or gabapentin; however, she is already on sertraline, so caution with drug interactions. (2) Psychological: cognitive-behavioral therapy (CBT) to address stress and pain coping; consider referral to a psychologist. (3) Behavioral: relaxation techniques, mindfulness. (4) Dental: avoid irritating substances (alcohol, spicy foods), use sugar-free gum to stimulate saliva. (5) Medical: monitor sertraline efficacy; if depression is poorly controlled, adjust. Regular follow-up and reassurance are key. Avoid unnecessary dental treatments.