Seasonal affective disorder otherwise known as SAD in short can be treated by sad light therapy lamps.this disorder is a result of lack of sunlight in some geographical regions at a particular time of a year. Specially designed light boxes can be helpful in treating such conditions. In spite of not having clearance of food and drug administration agency of United states of America, the sad light therapy lamps are seen as a main mode of treatment of such disordered. The reason behind not getting the approval is stated as absence of clarity in the outcome of the clinical trials.There are many products in the market which claim to provide appropriate sad light therapy lamps. However one should be careful about the need of the therapy and accordingly procure such device. One of the most important factor one should look in the sad therapy lamps is, the box should have 10,000 lux illumination capacity of luminous intensity.Ideally the fluorescent lamps should have a screen which can diffuse smoothly and  that filters out ultraviolet rays. This is very important because the UV rays can potentially damage the skin when the skin is directly exposed. It is a requirement of the therapy that the box provides white light rather than a light of any particular wavelength.Soft broad spectrum white light is always preferred over blue lamps.Lights of particular wavelength coming singly out of the sad light therapy lamps are considered to be of no importance to the patient. The glare should be minimum in the light therapy lamp for sad. it is very much essential to have an appropriate size of the sad light therapy lamp. Before buying this product one must ensure that this is product has been reviewed and also has been tested or passed a trial by clinical means. However before using the sad light therapy lamps for seasonal affective disorder , mood disorder or bipolar disorder one should seek professional help of a medical personnel who can give a right opinion and prognosis. Before using the sad light therapy lamp one should consult the psychiatrist and also get the eyes checked by a practitioner to rule out any adverse effect of the sad light therapy lamp. at the same time the patient should seek advice of the medical practitioner about the specifications of the device to get maximum benefit out of it.Sad light therapy lamps may be contraindicated in some conditions and seeking advice from the medical professional is the safest way of avoiding any mis-happening.