Patients with acute diffuse external otitis were treated using an alternating and pulsatile low-frequency magnetic field synchronized with the pulse wave propagation across the pathological focus. It was shown that the magnetic exposure should be 30-40 min longer because the beneficial effect of the magnetic field develops as a function of time and because there should be a feedback between the acting magnetic field and hydrostatic pressure in focal capillaries which varies during inflammation. This therapeutic method was applied to 27 patients. The mean time on this method was 4 days shorter when compared to that on UHF and SHF therapy or 3 days shorter when compared to that on continuous magnetic field therapy, the difference being statistically significant.