How long does narrowband UVB phototherapy take to work for atopic dermatitis?

Atopic dermatitis causes itchy, inflamed, dry skin, and narrowband UVB uses a carefully controlled band of ultraviolet light to reduce skin inflammation. Improvement is gradual rather than an instant change after one visit. Itch, redness, sleep disruption, and flare frequency may not all improve at the same pace.

A clinician adjusts the light exposure according to your skin response and treatment history. The course may be changed, paused, or stopped if the skin becomes too irritated. Phototherapy is usually one part of a plan that can include moisturisers and prescribed anti-inflammatory treatment.

Attend sessions on the schedule provided, use moisturiser as directed, and tell the phototherapy team about new medicines or products that increase light sensitivity. Protect areas that are not being treated and follow instructions about creams before the visit. Do not add extra sunlight or tanning exposure to speed the process.

Tell the clinic promptly about intense burning, blistering, marked swelling, or redness that lasts beyond the expected response. Seek urgent care for facial swelling, breathing difficulty, or widespread blistering. Contact your dermatologist if itching suddenly worsens, the eczema becomes painful or weepy, or infection is suspected.

Ask how response will be measured, which medicines must be reported before treatment, and what to apply on treatment days. Confirm how missed sessions are handled, when other eczema medicines can be used, and which reaction should lead to a pause.