The most common side effects from bright light therapy are eye and/or skin irritation and headaches. They are most prevalent in people with light colored eyes, blonde or red hair and sensitive skin. These side effects can usually be resolved by gradual introduction of light therapy.
If you are suffering from any of these side effects, you should first stop using the light until eye or skin irritation clears up. Then, start using the light five minutes a day, increasing gradually to full use over a period of about two weeks. Please note that some medications, such as lithium, certain antibiotics, acne creams, chemotherapy drugs, can make you very sensitive to light.
Consult With Your Physician
If you feel that you may be suffering from depression, you must consult a qualified health professional (SAD sufferers are not an exception). Although a self-diagnosis seems relatively easy to make, other conditions can be similar to SAD. These problems must be considered and eliminated before a SAD diagnosis is made.