UV light therapy for dyshidrotic eczema

Narrowband UVB uses a controlled medical light source to expose affected skin under a treatment plan. For dyshidrotic eczema, this may be discussed when flares keep returning or remain difficult to control. It is not the same as using a sunbed or deliberately getting more sunlight. A clinician considers the diagnosis, skin type, medicines, previous light exposure and the location of the eczema before recommending it.

Attend the scheduled sessions as directed and tell the clinic about medicines, photosensitivity, a history of unusual reactions to light or any new rash. Protect areas that are not being treated according to the clinic's instructions, and do not add sun exposure to the plan. Moisturising may support the skin barrier, while a prescribed topical corticosteroid may still be used when appropriate. Report persistent redness, burning, blistering or worsening symptoms before the next session.

Contact the treating team if a session causes more than mild short-lived irritation, if the treated skin blisters or becomes very painful, or if eczema spreads. Seek prompt medical care for rapidly increasing redness, warmth, swelling, pus, fever or severe pain. New blisters should be assessed rather than assumed to be a treatment reaction.

Ask why narrowband UVB is being considered, what improvement will be monitored, and how the hands or feet will be positioned and protected. Check how to use moisturiser and other medicines around sessions, which reactions are expected, and when the plan should be changed.