Is narrowband UVB phototherapy done with an NB-UVB phototherapy cabin?

A cabin contains vertical light sources that expose a broad area of skin to a carefully selected band of ultraviolet B light. During a visit, protective measures are used for areas that should not receive treatment, and the patient stands inside the cabin for the prescribed exposure. The exposure is brief and adjusted over a course of visits according to the skin response. A handheld or smaller panel may be more practical when only a small patch, hand, or foot needs treatment. The cabin delivers the light; it does not diagnose the skin condition or decide the dose.

Before treatment, tell the clinician about medicines, supplements, eye conditions, previous light reactions, and any history of unusual sensitivity to sunlight. Follow instructions about eye protection and covering sensitive areas. Avoid adding tanning sessions or extra ultraviolet exposure between appointments. Use only the skin products recommended by the treating team, because some products can increase sensitivity. Keep a record of redness, tenderness, itching, or new symptoms so the dose can be reviewed. See more about the [NB-UVB Phototherapy Cabin](/technology/nb-uvb-phototherapy-cabin/) and [Narrowband UVB Phototherapy](/treatments/medical-dermatology/narrowband-uvb-phototherapy/).

Tell the clinic if redness lasts beyond the expected period, becomes painful, blisters, peels extensively, or affects vision. Seek urgent help for severe eye pain, marked swelling, breathing difficulty, or a widespread reaction after treatment. A new or changing spot should also be examined rather than exposed without advice.

Ask which body areas will use the cabin, what must be covered, how the starting exposure is chosen, what reaction is expected, and when the dose should be delayed or reduced.