I would have never thought to purchase equipment that artificially produces UV light since I live in Phoenix, Arizona. Trying to sell me UV phototherapy equipment would be like trying to sell salt water to professional surfer. But for some of the colder, darker regions of the world a UV phototherapy machine might come in handy.
Having at least some exposure to sunlight is vital to maintaining a healthy lifestyle. In additional to being healthy in general, medical professionals have observed correlations between UV rays and a drastic improvement to psoriasis symptoms. Much of the medical community is convinced (based on measurable test results) that sunlight (or the like) suppresses the harmful immune system cells (T-cells) that cause psoriasis.
Thus, if you are in a cold, dark part of the world, it may be to your benefit to purchase UV phototherapy equipment. In addition to the designs that expose one whole side to UV rays at a time, there are also little hand-held UV emitters that can be used for exposing smaller parts of the skin to UV radiation.
Here’s an idea: Make a portable UV ray emitter that plugs into your car’s lighter so you can sunbath on the go! If anyone wants to buy this idea from me, send me an email.