Treatment of Depression and Functional Neurological Disorder (FND)

Pharmacological Interventions

The combination of a benzodiazepine with a stimulant is pharmacologically counterintuitive, as they have opposing mechanisms of action (CNS depression vs. stimulation), according to the American Academy of Child and Adolescent Psychiatry 1
Start an SSRI (fluoxetine, sertraline, or escitalopram) as first-line treatment for depression, as recommended by the American Psychiatric Association, with established efficacy and can address both depressive and anxiety symptoms commonly seen in FND patients 2
Start an SSRI (fluoxetine, sertraline, or escitalopram) as first-line treatment for depression, as recommended by the American Psychiatric Association, with established efficacy and can address both depressive and anxiety symptoms commonly seen in FND patients 3
Implement a gradual taper of clonazepam to minimize withdrawal reactions, with a recommended reduction of approximately 0.25mg every 1-2 weeks, monitoring closely for withdrawal symptoms, as suggested by the American Academy of Sleep Medicine 4

Refer for physical rehabilitation (physical and occupational therapy), which is the treatment of choice for functional motor symptoms, as recommended by the American Academy of Neurology
Consider psychotherapy as an emerging evidence-based treatment across FND subtypes, with cognitive-behavioral therapy approaches addressing maintaining factors, as suggested by the American Psychological Association

Clonazepam is superior to alprazolam for tapering due to its longer half-life (30-40 hours vs. 12-15 hours), which provides more continuous anxiolytic coverage and reduces interdose rebound anxiety that complicates alprazolam withdrawal, as supported by the American Academy of Sleep Medicine 5

For insomnia during taper, melatonin 3-6mg can be used, as recommended by the Journal of Clinical Sleep Medicine 5

If the patient cannot tolerate clonazepam taper below 0.5mg daily, consider switching to diazepam (Valium) for the final taper phase, as suggested by the American Academy of Family Physicians 6
Diazepam's longer half-life (20-100 hours including active metabolites) may facilitate the final discontinuation, and the conversion from clonazepam 0.5mg to diazepam 10mg can be used, then taper diazepam by 1-2mg every 1-2 weeks, as recommended by the American Academy of Family Physicians 6