Abstract: An interferential wave, micro current device is disclosed. The device typically has a power supply, a frequency generator, a pulse generator, a pulse envelope generator, an electrical current controller, and four or more channels for applying micro amperes of electrical current to patient tissue. Each channel has two electrodes for completing a micro current electrical circuit through patient tissue. The controller provides a controlled amount of current in each channel from about 20 micro amperes to about 200 micro amperes at a frequency up to about 300 Hertz. Also disclosed are methods for treating lymphedema, edema, fibrosis and fibromylagea by application of interferential wave form micro current.