Device/system that provides pain relief by delivering stimulation that neither generates action potentials nor completely blocks neural transmission (in the peripheral nerve). The present teachings provide relief by modulating release of neurotransmitters in peripheral nerves to cause neuromodulation at the level of the peripheral nerve (modulation of neural signals in the peripheral nerve). The present teachings provide relief by modulating release of neurotransmitters in peripheral nerves to cause neuromodulation at the level of the peripheral nerve (modulation of neural signals in the peripheral nerve) to alter the frequency of physiologically generated neural transmission.