light therapy


Definition of light therapy

: the treatment of medical or psychiatric conditions (such as seasonal affective disorder) by the controlled application of light

called also light treatment, phototherapy

Examples of light therapy in a Sentence

Recent Examples on the Web

According to Psychology Today, treatment for symptoms of SAD include combinations of antidepressant medication, light therapy, Vitamin D, and counseling. Maya Mcdowell, House Beautiful, "8 Ways to Feel Happier at Home When Winter’s Bringing You Down," 15 Feb. 2019 Then the treatment is topped off with LED light therapy (another form of therapeutic electrical stimulation invented by NASA to help heal wounds while in space) over the face once the needles have been inserted. Roxanne Adamiyatt, Town & Country, "What Exactly Is Facial Acupuncture — And Why You Should Try It," 6 Feb. 2019 This often means light therapy, popularly transmitted by the SAD (Seasonal Affective Disorder) lamp. Lilah Ramzi, Vogue, "Is This the Original SAD Lamp? The Best Tropical Light Fixtures to Ward Off Seasonal Blues," 12 Oct. 2018 For chronic breakouts that can’t be resolved with over-the-counter salicylic acid or a faithful Proactiv protocol, light therapy is often the dermatologist’s go-to solution. Kari Molvar, Vogue, "Why Cross-Training Your Skin Is the Acne Solution Derms Swear By," 2 May 2018 Click the video to see how, with the help of Neutrogena Light Therapy Acne Spot Treatment, a pen-like device that uses light therapy to target acne, and some self love, Annie's skin cleared — and even more importantly, her confidence soared. Jennifer Tzeses, Cosmopolitan, "Annie Jaffrey's Breakout Advice is Life-Changing," 30 Aug. 2017 That’s why aesthetician Jessica Arnaudin has recovering tanning-bed-junkie clients slip under the LED light therapy lamps at Beauty Bungalow, a St. Petersburg, Fla., day spa. Dana Wood, WSJ, "6 Actually Convincing Ways to Fake a Tan," 15 May 2018 Beloved by Victoria Beckham, Chapman’s custom offerings range from a plumping micro-needling facial to a four-digit transformative treatment that uses LED light therapy, radio frequency, and laser resurfacing to lift, firm, and contour the face. Zoe Ruffner, Vogue, "Meghan Markle’s Guide to Royal Wedding Beauty in London," 14 May 2018 The new therapy includes the oral medication Xeljanz (tofacitinib) — a drug already approved for use in rheumatoid arthritis patients that dampens the body's immune response — and ultraviolet-B light therapy. Serena Gordon,, "New treatment could be 'breakthrough' for vitiligo," 8 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'light therapy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of light therapy

1935, in the meaning defined above

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Last Updated

24 Feb 2019

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The first known use of light therapy was in 1935

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light therapy


Medical Definition of light therapy

: phototherapy especially : the use of strong light (as of 10,000 lux intensity) for the treatment of depression and gloom (as in seasonal affective disorder)

called also light treatment

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to boil down or concentrate

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