Does narrowband UVB phototherapy treat psoriasis?

The treatment delivers a carefully selected band of ultraviolet B light to affected skin. A dermatologist adjusts exposure according to your skin response, psoriasis pattern, and treatment history. It may be considered when plaques cover several areas, topical treatment has not provided enough control, or a non-tablet option is preferred.

Improvement is gradual rather than immediate, and sessions are usually arranged regularly. Psoriasis may return after a course finishes, so your clinician will discuss maintenance, other treatments, and skin protection. The eyes must be protected during treatment, and the treatment plan should account for medicines or conditions that increase light sensitivity.

Have your psoriasis assessed before starting so the clinician can distinguish plaques from other rashes and record the areas needing treatment. Tell them about all medicines, supplements, previous light treatments, and any history of unusual reactions to sunlight.

Attend each planned session and follow the advised exposure schedule. Do not add sunbathing or tanning sessions to the plan. Report persistent redness, blistering, marked tenderness, or a new rash; these findings can mean the exposure needs review. Continue prescribed moisturisers or other medicines exactly as directed.

Seek prompt medical advice for severe redness, blistering, open skin, eye pain, or a significant change in a mole after light exposure. Contact your dermatology team if treatment repeatedly causes discomfort, if plaques worsen quickly, or if you develop widespread redness with fever or feeling unwell.

Ask which psoriasis areas will be treated, how the exposure will be adjusted, what protection you need, and how progress will be reviewed. You can also ask how this option compares with creams, other light treatments, or systemic medicines for your pattern of psoriasis.