Inferential therapy (IFT) reduces pain in the same way as which modality?

• A. Massage
• B. Ice
• C. TENS
• D. Acupuncture

Answer: (C)

Inferential therapy reduces pain by electrical stimulation of sensory nerves to dampen pain signals at the spinal level. It uses two intersecting medium-frequency currents to create a low-frequency beat inside the tissues, which stimulates large-diameter afferent fibers (A-beta) and activates the gate control mechanism. This is the same basic way as TENS, which also delivers electrical stimulation to excite those same fibers and inhibit nociceptive transmission, leading to analgesia. In both modalities, the goal is to modulate how pain signals are processed in the nervous system by increasing non-painful sensory input, which diminishes the perception of pain. Other options rely on different principles—massage provides mechanical and circulatory effects, ice produces cold-induced analgesia, and acupuncture involves distinct mechanisms such as endogenous opioid release and different neural pathways.