IFT: Indication, Contra-indication, Therapeutic Effect & Dangers

Interferential Therapy:

It may be defined as the use of two medium frequency current around 4000hz to evoke interference current between 1Hz to 1000Hz.

Physiological effect

  • Increase blood circulation
  • Vasodilation
  •  Remove  wastes substances
  • Increase muscle stimulation
  • Increase metabolic rate
  • Reduction of oedema
  • Relief of pain
  • Decrease blood pressure

Indication of IFT

Indication of IFT

  • Pain – Both case of pain and referred pain- e.g.- Migraine, Vascular insufficiency, Stump complication, Neuralgia
  • Muscle spasm – strong contraction
  • Oedema – to absorb the exudate
  • Haematoma – with ice pack
  • Chronic ligamentous lesion – with UST and mobilization
  • Trigger spot – to the relief of pain and mobilize the spot Stress incontinence – contraction of pelvic floor muscle
  • Stress incontinence – contraction of pelvic floor muscle
  • Delayed union – in case of fracture to stimulate the union

Contraindication of IFT

  • Arterial disease
  • Deep vein thrombosis
  • Infective condition
  • Pregnant uterus
  • Danger of hemorrhage
  • Malignancy
  • Pacemaker
  • During menstruation
  • Febrile condition
  • Large open wounds
  • Unreliable patient
  • Dermatological condition


  • Shock
  • Burn.