Ollowen Guides · Treatments

Phototherapy for eczema: an overview

If your child's eczema is severe and creams alone aren't holding it, you may hear a dermatologist mention phototherapy — treatment with carefully controlled ultraviolet light. It's a well-established option that sits between topical creams and systemic medicines. Here's a plain-language overview so the idea isn't a mystery. It's a specialist treatment, so this is background, not a recommendation.

An educational overview · Not medical advice — phototherapy is prescribed and supervised by a dermatologist

What it is

Phototherapy uses controlled doses of ultraviolet light — most commonly narrowband UVB — delivered in a special cabinet or unit, usually a couple of times a week over a course of weeks. The light calms the overactive immune response in the skin. It's done in a clinic (or sometimes with a home unit under supervision), quite different from tanning beds or ordinary sun exposure.

When it's considered

Phototherapy is generally reserved for more severe eczema that hasn't responded well to creams and ointments, and typically for older children (often around age 5+, since it requires standing still safely in the unit). It's not a first-line treatment — the plan usually steps up to it after topical treatments, and it's one option alongside systemic medicines (see beyond creams). Your dermatologist weighs whether it fits your child.

What to expect and how well it works

Sessions are short but need to be regular (typically twice weekly), which is a practical commitment — travel to the clinic, repeated visits. In studies of children with severe eczema, narrowband UVB brought good improvement in a large majority, with benefits that could last well after the course. It's considered an effective, well-tolerated option in the right child.

Safety

Narrowband UVB has a good safety record in children when properly dosed and supervised; the most common side effects are mild redness and dryness. Because it involves UV light, dermatologists still weigh long-term sun-exposure considerations — another reason it's carefully supervised and not a casual choice.

The takeaway

Phototherapy is a legitimate, effective step for severe eczema when creams aren't enough — not scary, but a real commitment, and firmly a dermatologist's call. If it's raised for your child, ask about the schedule, expected benefit, and what it involves; going in informed makes the decision easier.

Show the specialist the full severity picture

Phototherapy is for eczema that creams can't control — a picture your dermatologist needs to see clearly. Ollowen turns your check-ins into that honest record.

Opening soon

Free for 14 days · no card, no account · your child's data stays on your device

Sources

More Ollowen guides: see all →