Therapy that uses a timed daily dose of intense light for Seasonal Affective Disorder?

• A. Light Therapy
• B. Bright Light Therapy
• C. Phototherapy
• D. Light Exposure Therapy

Answer: (D)

Light Exposure Therapy best fits the description because it highlights the core action of the treatment: exposing a person to bright, therapeutic light on a timed daily schedule. In Seasonal Affective Disorder, the goal is to reset the body’s circadian clock and reduce melatonin production, which tends to be abnormal in the darker months. Clinically, this is done with a light box that delivers a high intensity (often around 10,000 lux) for a set period each morning, which shifts the biological rhythm earlier and can lift mood. Other terms like Light Therapy, Bright Light Therapy, or Phototherapy describe the same approach in slightly different wording, but the phrase Light Exposure Therapy foregrounds the exposure to light as the active treatment, aligning with the mechanism and routine used for SAD.