Having three pulse modes is fine for most patients. Most patients will find one pulse mode which is most comfortable for them and will regularly use that one pulse mode. However, a significant number of patients do try different modes in different situations, or will try different modes just so they don't get used to the one mode. In the case of the Spectrum Max-SD, one of it's five pulse modes was specially designed by Dr Jim Finney from the Pain Treatment Centre, Fort Worth Texas, for use in patients with Reflex Sympathetic Dystrophy, an uncommon but difficult to treat pain condition. This particular pulse mode is a patented variation of the modulation mode, and is felt as a very slowly changing pulse.
Many patients find the special mode useful for normal pain as well.
Has specially designed form of stimulation used for cases of reflex sympathetic dystrophy. This mode has also proved popular with patients without reflex sympathetic dystrophy. J.W.Finney et al. Variable pulse width and rate. Five pulse modes, including two different forms of strength duration, including sympathetic stimulation.