Combining waveforms to treat chronic pain without causing paresthesia

A method comprising:

• treating chronic pain without causing paresthesia using a plurality of electrodes, the plurality of electrodes including a common electrode adjacent to spinal cord tissue to be therapeutically modulated to treat chronic pain and further including at least two electrodes different than the common electrode,
• wherein treating chronic pain without causing paresthesia includes delivering a combined electrical waveform, including concurrently delivering at least two waveforms from the at least two electrodes, respectively, to the common electrode to provide the combined waveform from the common electrode to the volume of tissue to treat the chronic pain without causing paresthesia.

A method, comprising:

• treating chronic pain without causing paresthesia using a plurality of electrodes, the plurality of electrodes including both a first common electrode and a second common electrode adjacent to spinal cord tissue to be therapeutically modulated to treat chronic pain and further including a first group of at least two electrodes different than the first common electrode and a second group of at least two electrodes different than the second common electrode,
• wherein treating chronic pain without causing paresthesia includes delivering both a first combined electrical waveform and a second combined electrical waveform, including concurrently delivering at least two electrical waveforms from the first group of at least two electrodes to the first common electrode to provide the first combined electrical pulse train from the first common electrode to the volume of spinal cord tissue, wherein delivering the second combined electrical waveform includes delivering at least two electrical waveforms from the second group of at least two of electrodes to the second common electrode to provide the second combined electrical waveform from the second common electrode to the volume of spinal cord tissue.