Frequently Asked Questions

Can I expose my “healthy” skin to the light, or do I need to cover it somehow?

It’s usually best to keep uninvolved skin covered with clothing or sunscreen during your treatments, but follow your doctor’s advice.  The most important thing about covering “healthy” skin is to be consistent, and always use the same covering techniques on each treatment. (External genitalia should be covered during PUVA therapy.)

If my device is located in a cool room, do I need to allow time for the lamps to warm up?

In situations where a device is kept in a very cold environment such as a garage, a five minute warm-up may allow faster treatment times.  If you have a dosimetry controlled device, there is no real advantage to allowing it to warm up first.

I’m seeing good results with my phototherapy treatments, except for my face.  Is it possible it is working everywhere except that?

For best results, make sure that all makeup or anything covering your face has been removed.  Additionally, since the face is almost always exposed to light, it may have “photoadapation,” meaning it has become used to this light exposure.  Ask your dermatologist if you could benefit from a higher treatment dosage.

How long do I need to wait before I begin to see results?

The length of time varies from patient to patient, and between treatment indications.  Typically psoriasis and eczema patients will see much faster results (a few weeks) than vitiligo patients (a few months). The most important thing is to be consistent with your treatments, and to follow your doctor’s treatment plan.

Should I treat for the same amount of time that I treat for in the doctor’s office?

Your home unit will most likely have a different power output than the unit in your doctor’s office, therefore the treatment time will probably be different as well.  The important thing is the number of milliJoules of light that are delivered, and a smaller unit might take a little longer to deliver the same number of milliJoules.  This is okay!  Follow your doctor’s directions for dosing advice.  If you have questions about how to program your device to deliver the doses your doctor provides, please contact Daavlin service.

I feel like the treatment is not working as well as it used to.  Do I need to replace the lamps?

It is normal for the power of phototherapy lamps to decrease with use.  If your treatments are no longer working as well, you may need to replace the lamps.  You will need to get a prescription for your new lamps, but they can easily be shipped to your home.  If your DermaPal unit needs relamping, we will assist you with shipping it to Daavlin, where we can service it and send it back to you with the new lamp installed.

What is a good room to do my home phototherapy treatment?

Choose a dry, enclosed room where others will not be exposed to the light.  Optimum treatment times and lamp life will occur when the unit is kept in a room temperature area that is neither extremely hot nor cold.

My skin turned red after my treatments.  What do I do?

Occasional or temporary redness may be normal if it resolves by the next treatment time.  If your redness is sustained, ask your doctor if you should reduce your treatment times.

My lamp(s) went out.  What do I do?

If your device’s controller is not turning on, make sure it is connected to power and the circuit breaker (if equipped) is turned on.  Then, unplug your device and make sure that the lamps are securely seated in the lamp holders.  If only some of the lamps are not working, swap them with the ones that are.  If the lamp(s) won’t work at all, you may have a bad lamp(s) and should contact Daavlin customer service.

Can I use my device in other countries?

Every Daavlin phototherapy device has a label near the power inlet with a voltage and frequency specification.  If the voltage of the country that you are traveling to matches the label, you can feel free to use it.  If you would like to use your device in countries with a different voltage, contact Daavlin for more information.  Depending on the exact unit you have, there are a range of possible solutions.