Home or Clinic UVB for Psoriasis?What the LITE Trial Found

If clinic journeys make psoriasis light treatment difficult to attend, ask your dermatologist whether prescribed home narrowband UVB is suitable. The National Psoriasis Foundation¹ describes home treatment as an option requiring a prescription, instructions and continuing checkups. Buying a lamp does not supply that care plan.¹

The trial compared treatment arrangements as well as skin results

LITE randomized 783 people with plaque or guttate psoriasis to home or clinic narrowband UVB for twelve weeks.²

Outcome	Home	Clinic
Clear or almost clear skin at twelve weeks	32.8%	25.6%
Received at least 24 treatments	51.4%	15.9%
Treatments with persistent redness	5.9%	1.2%

The skin result met the study’s prespecified noninferiority criterion, which used a 15-percentage-point margin. This supports home treatment within that comparison; it does not mean identical results. The redness percentages count treatments, not people: redness lasted over 48 hours or remained at the next session.²

The home unit used guided dosing controls. Participants received it free, and patients and clinicians knew the assigned setting. Findings cannot establish that every home device performs similarly or predict your equipment bill.²

Check the equipment and the space before ordering

The Foundation describes several UVB formats, including units for localized areas, handheld devices and full-body equipment. Ask the dermatologist which type matches the areas being treated and which supplier can provide the prescribed unit. Its guidance also advises regular checkups during home treatment.¹

Before you accept delivery, request the unit’s dimensions, the required operating space and any electrical requirements. Measure the proposed location and describe who else uses that room. Ask the supplier how the unit is secured between sessions and how repairs, replacement bulbs and servicing are arranged.

Get a written cost estimate that distinguishes the device, delivery, instruction, supplies and follow-up visits. Ask your insurer which items need authorization and what you would owe. A study finding about convenience cannot answer those questions for a particular home or insurance plan.

A home unit still needs treatment instructions

Memorial Sloan Kettering explains that home phototherapy involves a doctor’s prescription specifying the therapy and dose, equipment instructions and a machine calibrated for the patient. Its guidance emphasizes using the prescribed distance from the unit and protective goggles as instructed.³

Have the team demonstrate the controls and watch you explain the steps back. Ask for written instructions covering the treatment schedule, body positioning, skin protection, missed sessions and reactions after the previous dose. Keep the clinic’s contact details beside the unit. Do not extend an exposure because a session was missed or a patch still looks inflamed.

Bring your complete medicine and skin-product list to the review. The American Academy of Dermatology⁴ notes that some antibiotics, diuretics and antifungals increase sensitivity to UV. It also cautions against applying salicylic acid before UVB because it can reduce treatment effectiveness. Ask what your prescribed creams require, including when to apply them.⁴

Decide how reactions and progress will be reviewed

The Academy lists possible immediate effects including tenderness, stinging, itching and darker spots, with blisters or burns occurring less often. It also discusses longer-term risks, including skin aging and skin cancer. Your dermatologist needs your skin-cancer history and any condition that makes you sensitive to light when assessing suitability.⁴

Ask how to describe a reaction if redness is difficult to see on your skin, and what should prompt a call before another session. MSK advises contacting the treating provider about blistering, open skin or treated-area redness lasting more than 24 hours. Follow your team’s instructions rather than using a trial’s reaction rate to judge your own skin.³

At follow-up, bring the treatment record and describe changes in itching, soreness and the activities psoriasis interrupts. Ask whether the response justifies continuing the current plan or whether the treatment needs adjustment.

Skin, Head to Toe introduces the Skin Log in “Twelve Weeks,” with dated photographs and notes about irritation and treatment starts. That record-keeping approach can help you prepare for a prescribed-treatment review; your phototherapy team sets the exposure and assessment schedule.