1. A method of monitoring a subject's response to a plurality of neuromodulation therapies, the method comprising: delivering a neuromodulation therapy that is adapted to prevent and/or manage a symptom of a subject suffering from a neurological or psychiatric disorder, wherein the neuromodulation therapy is specified by a set of parameters; recording the set of parameters of the neuromodulation therapy and a subject's response to the neuromodulation therapy; delivering a subsequent neuromodulation therapy to the subject, wherein at least one parameter of the set of parameters of the subsequent neuromodulation therapy is automatically changed relative to the set of parameters of the previously delivered neuromodulation therapy; and recording the set of parameters of the subsequent neuromodulation therapy and a subject's response to the subsequent neuromodulation therapy.