Pilot Neurobehavioral Therapy for Functional Neurological Disorder

The goal of this pilot randomized clinical trial is to learn if Neurobehavioral Therapy (NBT) works to treat motor functional neurological disorder (mFND) (also referred to as functional motor disorder). The main questions it aims to answer are: * Does NBT lower mFND symptoms? * Does NBT lower common co-occurring symptoms and improve functioning? Researchers will compare NBT to standard medical care (SMC). Participants will be randomized to receive either: * 12 weekly sessions of NBT, along with their SMC, * or continue receiving their SMC as provided by their treating clinicians. * all participants. regardless of group assignment, will complete a total of five in-clinic visits at the following time points: Baseline, 6 weeks, 12 weeks, 8 Months and 12 Months for self-report surveys to assess functional status, quality of life and mFND symptoms.

The study aims to enroll 40 participants at Rhode Island Hospital. 20 participants with Motor Functional Neurological Disorder (mFND) will be randomized to Neurobehavioral Therapy (Group 1) and 20 participants with mFND to Standard Medical Care (Group 2). Those randomized to neurobehavioral therapy will be asked to complete treatment sessions over the course of 12 to 18 weeks. Those in the standard medical care arm will continue to receive their routine care with their clinicians. All participants regardless of group assignment, will complete a total of five in-person clinic visits at the following time points: Baseline, 6 weeks, 12 weeks, 8 Months and 12 Months. These visits will include the completion of interview questions and self-report surveys that will assess functional status, quality of life and mFND symptoms. Please see the "Arms and Interventions" section to see a more detailed description of each group/arm. The goal of this Clinical Trial is to investigate the feasibility and efficacy of Neuro-Behavioral Therapy in Individuals aged 18 to 70 diagnosed with Motor Functional Neurologic Disorder. The main questions this study aims to answer are: Aim 1: Examine the feasibility, acceptability, and practicality of manualized Neuro-Behavioral Therapy (NBT) in Functional Neurological Disorder (FND). Hypothesis 1: Manualized NBT will demonstrate feasibility through acceptability and practicality, defined as ≥80% of participants enrolling in the study will participate in the study measures (acceptability) and complete the entire study protocol (practicality), respectively. Aim 2: Examine the preliminary effectiveness of manualized NBT in improving health-related quality of life and reducing the severity and disability of mFNDs, as measured by the SF-36 and PMDRS/S-FMDRS (primary outcome), respectively. Hypothesis 2: NBT will show improvements in SF-36 scores and reductions in PMDRS scores. We will evaluate this by conducting a preliminary examination of the manualized NBT intervention, with a focus on interpreting effect sizes. We will also gather key statistics needed to inform a fully powered clinical trial, such as the standard deviation and pre-post correlation of the SF-36 and PMDRS.