Validation of Artificial Intelligence-Based Facial Paralysis Assessment in Patients With Bell's Palsy

Inclusion Criteria

Inclusion Criteria: * Patients with unilateral Bell's palsy. * Patients must be within one month of onset of Bell's palsy symptoms at the time of enrollment. * Body mass index (BMI) less than 30 $kg/m\^2$. * Patients must be cooperative and able to follow simple verbal instructions during facial movement tasks. Exclusion Criteria: * Bilateral facial paralysis or recurrent Bell's palsy. * Facial nerve palsy due to known secondary causes (e.g., trauma, neoplasm, infection, stroke, Ramsay Hunt syndrome, or otitis media). * Facial deformities, scars, or burns that interfere with facial motion detection. * Uncooperative or cognitively impaired individuals unable to follow instructions or maintain required facial postures.