Onion (cooked small)
Mechanism variesWhy this food shows up for eczema
IBS vs skin nuance — highly individual. Onion (cooked small) is commonly discussed for eczema via Histamine. Flares may reflect IgE allergy, histamine load, nickel in foods, salicylates, or additives — mechanisms differ from person to person. Delayed flares make correlation hard without a meal + symptom log.
Trigger pathway
Patterns people associate with this food
- Patch testing and food-symptom logs often disagree with averages
- Track delayed windows with Sensio
How to test it in real life
Keep portions moderate during testing; flares often lag meals — consistent tracking reveals your threshold.
Related foods
On the Sensio blog
Can Onions Cause Eczema Flare-Ups? The Allium Connection Explained →Log meals & symptoms in Sensio
Reference pages show population-level patterns — the app is where your personal timeline reveals what actually affects your skin or gut.
Quick answers
- IBS vs skin nuance — highly individual. Onion (cooked small) is commonly discussed for eczema via Histamine. Flares may reflect IgE allergy, histamine load, nickel in foods, salicylates, or additives — mechanisms differ from person to person. Delayed flares make correlation hard without a meal + symptom log.
- Patch testing and food-symptom logs often disagree with averages Track delayed windows with Sensio
- Keep portions moderate during testing; flares often lag meals — consistent tracking reveals your threshold. For individualized guidance, speak with a qualified clinician. Sensio is for education and self-tracking, not diagnosis.
Educational information only — not medical advice. If you have food allergies, celiac disease, or an eating disorder, work with a qualified clinician before changing your diet.