Light therapy — aka bright light therapy or phototherapy — is a type of therapy where you’re exposed to artificial light. It’s typically used for people with seasonal depression, sometimes known as seasonal affective disorder (SAD).
This type of depression usually occurs when there’s less natural light during the fall and winter months.
“Natural sunlight ranks best when it comes to emotional well-being. However, certain times of the year bring about shorter days and longer nights,” says Michele Leno, PhD, LP, a licensed psychologist and founder of DML Psychological Services, PLLC, in Detroit, Michigan.
Read more at: https://psychcentral.com/depression/light-therapy-for-depression