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The history of light therapy can be traced back to ancient Egypt and India, where therapy with natural sunlight was first used to treat leucoderma. [3] In the 1850s, Florence Nightingale's advocacy of exposure to clean air and sunlight for health restoration also contributed to the initial development of light therapy for treatments. [4]
Evidence does not support a benefit in delayed-onset muscle soreness. [49] It may be useful for muscle pain and injuries. [50] A 2008 Cochrane Library review concluded that LLLT has insufficient evidence for treatment of nonspecific low back pain, [51] a finding echoed in a 2010 review of chronic low back pain. [52]
Light therapy, also called phototherapy or bright light therapy is the exposure to direct sunlight or artificial light at controlled wavelengths in order to treat a variety of medical disorders, including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, neonatal jaundice, and skin wound infections.
The term has also been applied specifically to the use of electric current to speed up wound healing. The use of electromagnetic stimulation or EMS is also very wide for dealing with muscular pain. [4] Additionally, the term "electrotherapy" or "electromagnetic therapy" has also been applied to a range of alternative medical devices and ...
This is distinct from transcutaneous electrical nerve stimulation (TENS), in which an electric current is used for pain therapy. "The main difference is the desired outcome. TENS unit is a medical device for pain relief. The desired outcome is to reduce pain by stimulating different nerve signals.
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Research has found evidence that light therapy such as low level laser therapy is an effective therapy for relieving low back pain. [ 23 ] [ 24 ] Instead of thermal therapy, where reactant energy is originated through heat, Low-Level Light Therapy (LLLT) utilizes photochemical reactions requiring light to function.
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