Here are modalities that are used for this treatment.
Medications are propelled through the skin by an electrical charge. This modality works on the physical concept that like charges repel each other, therefore, a positively charged medication will be repelled through the skin to the underlying tissues by the positively charged pad of an iontophoresis machine. Iontophoresis is usually prescribed for injuries such as shoulder or elbow bursitis.
Here is a partial list of physical agents used for treatment.
TENS is a relatively low voltage applied over painful areas through small self-adhesive electrodes. The electrical stimulation "disguises" or "overrides" the sensation of pain. It is a small, portable unit, used in intervals, to control pain and reduce dependence on drugs. It is usually prescribed for relief of pain.
Immersion of a body part into water with small "agitators" to provide a gentle massaging motion. A warm whirlpool provides relief from pain and muscle spasm and is often preparatory to stretching or exercise. Cold whirlpool is used to decrease inflammation and swelling.
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