The short answer is yes; both atopic eczema and psoriasis have a significant hereditary component. However, hereditary does not mean inevitable. In dermatology, these are considered complex or multifactorial conditions. This means that while a child can inherit a genetic predisposition (the tendency for the skin to be sensitive or for the immune system to overreact), environmental factors usually act as the trigger that turns that tendency into a visible skin condition. In the UK, where roughly one in five children develops eczema, understanding these genetic patterns helps parents and clinicians identify at-risk children early to implement protective skin care routines.
What We’ll Discuss in This Article
- The statistical risk of a child developing eczema based on parental history.
- The Atopic Triad (Eczema, Asthma, and Hay Fever) inheritance.
- The probability of passing psoriasis to your offspring.
- The role of the Filaggrin (FLG) gene in skin barrier health.
- Why genes are only one half of the story: The importance of environmental triggers.
- Managing genetic anxiety when planning a family.
1. The genetics of atopic eczema
Eczema is highly hereditary, but the inheritance pattern isn’t as simple as eye colour. It is often linked to the Atopic Triad, a cluster of conditions including eczema, asthma, and hay fever that tend to run together in families.
| Parental History | Child’s Estimated Risk of Eczema |
| Neither parent has eczema | ~20% (General population risk) |
| One parent has eczema | ~38% – 40% |
| Both parents have eczema | ~50% – 80% |
Note: Interestingly, some UK research suggest a gender-linked doubling effect, where a child’s risk may be higher if the parent of the same sex (mother to daughter, father to son) has the condition.
The Filaggrin (FLG) Gene
A major discovery in UK dermatology (pioneered by researchers at the University of Dundee) is the role of the filaggrin gene. Filaggrin is a protein that helps create the bricks and mortar of the skin barrier. If a child inherits a mutation in this gene from one or both parents, their skin barrier is naturally leaky, making them far more likely to develop eczema when exposed to triggers like house dust mites or soaps.
2. The genetics of psoriasis
Psoriasis also has a strong family link, though it is slightly less common in the general population than eczema.
| Parental History | Child’s Estimated Risk of Psoriasis |
| No family history | ~4% |
| One parent has psoriasis | ~14% – 28% |
| Both parents have psoriasis | ~40% – 75% |
If a child has a sibling with psoriasis, their risk is approximately 20%, even if neither parent shows symptoms. This suggests that parents can carry silent genes for psoriasis that only manifest in their children when combined in a specific way or met with a specific trigger.
3. Genes vs. Environment: Nature vs. Nurture
It is vital for parents to remember that DNA is not destiny. A child can inherit eczema genes but never actually develop the condition if their environment is managed carefully.
- The Door and the Push Metaphor: Think of genetics as a door that is slightly ajar. For the door to swing open and a flare-up to occur, an environmental factor (the push) is usually required.
- Common Triggers: These include the UK’s hard water, central heating, weather changes, emotional stress, or infections (like a streptococcal sore throat, which is a classic trigger for childhood psoriasis).
4. Can you prevent the inheritance?
While you cannot change your child’s genes, modern UK clinical advice focuses on primary prevention, protecting the skin barrier from the very first day of life.
- Early Emollients: For babies with a high genetic risk, some studies suggest that applying a gentle, fragrance-free emollient daily from birth can help bolster the skin barrier and may reduce the risk of eczema developing by up to 50%.
- Breastfeeding: There is some evidence that breastfeeding for the first four to six months may help support the developing immune system in at-risk infants.
Conclusion
Hereditary skin conditions are passed to children in the form of a risk profile rather than a guaranteed diagnosis. While the statistics for eczema and psoriasis inheritance can seem high, they also show that even with two affected parents, many children remain skin-healthy. By understanding your family history, you can be vigilant for early signs and work with your GP or health visitor to implement a barrier-first approach to your child’s skincare. In 2026, the goal is to manage the environment so that the genetic predisposition remains just that, a dormant part of a child’s DNA.
If I have psoriasis and my partner has eczema, what will our child get?
The child could develop either, both, or neither. Because these conditions share some overlapping genetic markers related to general skin inflammation, the child has a higher-than-average risk for atopy in general.
Is there a genetic test to see if my baby will have eczema?
While researchers can test for filaggrin mutations, this is not currently a routine NHS test. Clinical history (family background) is the standard way doctors assess risk.
Does childhood eczema always go away?
About two-thirds of children with atopic eczema find that their skin clears significantly by the age of 10, though they may always have sensitive skin as adults.
Why did my child get psoriasis when no one else in the family has it?
About 30% of people with psoriasis have no known family history. This can happen due to new genetic mutations or because family members carried silent genes that were never triggered.
Can stress during pregnancy cause the child to have eczema?
While stress is bad for the mother, there is no direct clinical evidence that maternal stress codes the baby’s DNA for eczema, though the mother’s health always influences the baby’s environment.
Are boys or girls more likely to inherit these conditions?
For atopic eczema and psoriasis, there is generally no significant difference in prevalence between sexes in the UK, although some studies suggest specific inheritance patterns from the same-sex parent.
Authority Snapshot (E-E-A-T Block)
This article examines the genetic inheritance patterns of inflammatory skin conditions based on current UK clinical research. It is written by the MyPatientAdvice Medical Writing/Research Team and reviewed by Dr. Rebecca Fernandez, a UK-trained physician with experience in medical genetics and dermatology. All information is aligned with the standards provided by the NHS, NICE, and the British Association of Dermatologists for 2026.
