Portable Sad Light Therapy Lamp is a type of device used to treat seasonal affective disorder (SAD) and other mood disorders. It is a special kind of light therapy that uses a bright light to simulate natural light. The light is usually bright enough to be seen from several feet away. The light from the lamp is thought to affect the body's production of hormones and neurotransmitters, which can help improve mood and energy levels.

Light therapy boxes can offer an effective treatment for seasonal affective disorder. Features such as light intensity, safety, cost and style are important considerations. Seasonal affective disorder (SAD) is a type of depression that typically occurs each year during fall and winter.