Making Sense of Eczema and Allergy
Eczema and Allergy: what it is, why it matters, and what published guidance actually asks of you.
Eczema is a skin barrier condition first, and treating it as a food allergy problem leads to unnecessary exclusions and worse nutrition.
Key takeaways
- Primary treatment: emollients and topical steroids, used adequately
- Food allergy: relevant in a minority, mainly infants with severe eczema
- Most useful single change: Treat the skin properly before investigating food triggers.
- Commonest mistake: Excluding foods without assessment.
- See a doctor if any of the signs under "When to speak to a doctor" below apply to you.
The short answer
The relationship between atopic eczema and food and environmental allergy.
Where it fits
This is part of Allergies. The published position is set out below, along with what it means day to day.
The numbers, in one place
| Measure | Figure |
|---|---|
| Primary treatment | emollients and topical steroids, used adequately |
| Food allergy | relevant in a minority, mainly infants with severe eczema |
| Unnecessary exclusion diets | risk nutritional harm and may increase allergy risk |
| Atopic march | eczema often precedes asthma and hay fever |
What that means in practice
The practical version:
- Treat the skin properly before investigating food triggers
- Use emollients generously and steroids at the strength prescribed
- Seek dietetic support before any exclusion diet in a child
- Identify and reduce irritants such as soap and heat
What gets people into trouble
Common wrong turns:
- Excluding foods without assessment
- Under-treating with topical steroids through fear
- Assuming eczema flares are always food-related
Where to go next
- Popular Beliefs About Eczema and Allergy, and What Is Actually Published
- Starting Out With Eczema and Allergy
- Eczema and Allergy — the reference entry
- What the Guidance Really Says About House Dust Mite
- What the Guidance Really Says About Insect Stings
When to speak to a doctor
See a GP urgently for rapidly worsening eczema with fever, painful clustered blisters or punched-out sores, which can indicate eczema herpeticum — a medical emergency. Call 999 for swelling of the lips, tongue or throat or difficulty breathing after eating.
Where this comes from
How this page was put together
Every figure, recommendation and warning above is taken from the guidance named in Where this comes from. Nothing on this page is inferred, summarised or generalised beyond what those bodies publish: where they give a number, it is their number, and where they are silent, so are we. Pages are rebuilt whenever the underlying record changes. Sign-off by a named clinician, where it has happened, is shown at the top of the page along with the date.
Medical disclaimer
This article is general information, not medical advice. It cannot account for your own history, medication or circumstances. Always speak to a GP, pharmacist or another qualified health professional before making changes that affect your treatment, and never delay seeking medical advice because of something you have read here. In an emergency, call 999.
Spotted something wrong? Report an error on this page. We correct on the page and say what changed.
