Neurostimulation for the treatment of functional neurological disorder: A systematic review

•More recently, Functional Neurological Disorder pathophysiology has become better understood.•FND as a neurocircuitry model of disease opens possibilities for neuromodulation techniques as potential treatment tools.•Existing non-invasive brain stimulation (NIBS) studies in FND are very heterogeneous in design, which prevent us to make meaningful conclusions.•The efficacy of NIBS techniques as potential treatments for FND remain to be confirmed.