When is narrowband UVB phototherapy recommended for atopic dermatitis?

Atopic dermatitis causes itchy, inflamed, dry skin and can affect sleep, work, or daily comfort. A dermatologist may discuss light treatment when affected areas are extensive, recurring, or difficult to manage with moisturisers and prescribed creams. Narrowband UVB uses a controlled part of ultraviolet light to calm skin inflammation. It is delivered in a clinic according to a planned schedule, with the dose adjusted to your skin response. The doctor considers your skin type, medical history, medicines, previous light sensitivity, and whether another condition could be causing the rash. Treatment is not suitable for every person and should be supervised.

Continue the moisturising routine and prescribed medicines unless your dermatologist changes them. Attend each planned session with clean skin and tell the clinic about new medicines, cold sores, unusual reactions to sunlight, or a history of skin cancer. Wear the eye protection provided and shield areas that the treatment plan excludes. Keep a note of redness, tenderness, itching, or a flare after each visit so the dose can be reviewed. Do not add tanning sessions or use a home ultraviolet device without specialist advice. More detail is available in Narrowband UVB Phototherapy.

Contact the treatment team if redness lasts beyond the expected period, blistering develops, pain becomes marked, or treated skin looks burned. Seek medical help for rapidly spreading redness with fever, oozing, crusting, or sudden facial swelling. These changes may reflect infection, a strong light reaction, or a separate problem rather than an ordinary eczema flare. Urgent care is appropriate for breathing difficulty or swelling of the lips or tongue.

Ask why light treatment fits your pattern of eczema, what improvement to look for, and how your medicines affect light sensitivity. Discuss eye protection, missed sessions, moisturiser timing, and what should happen if a flare or reaction occurs.