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Contact allergy and patch testing
Contact allergy and patch testing: the European baseline series is a published, structured list — that is ~35 item pages, one per allergen, each saying what…
This guide is general education, not a diagnosis or an individual treatment plan. Urgent, severe or worsening symptoms belong with the local emergency service or a qualified clinician.
What this guide covers
The European baseline series is a published, structured list — that is ~35 item pages, one per allergen, each saying what it is, where it hides and how to avoid it: nickel, cobalt, chromate, fragrance mix I and II, Myroxylon pereirae, methylisothiazolinone and MI/MCI, formaldehyde releasers, para-phenylenediamine in hair dye, colophonium, rubber accelerators, lanolin, propolis.
Plus the process pages: what a patch test week involves, why it is not a blood test or a prick test, reading a plus-plus result, hand dermatitis at work and which jobs get it, and how to translate an allergen into shopping decisions using INCI names. One focused section asks: "Methylisothiazolinone: the preservative in wet wipes".
How to use it
Start with the description that most closely matches your question about Contact allergy and patch testing. Use the evidence section to understand what is known, then use the boundary section to decide when self-education should stop and clinical care should begin.
The page keeps the main question, its evidence base and its limits together in one canonical place. That makes it useful as a quick orientation and avoids splitting a broad subject into shallow pages before each narrower answer has enough verified material of its own.
Search vocabulary in four languages
Terminology changes across borders. These are example phrases people use for the same subject in Estonian, Finnish, Russian and English; they are included as a practical vocabulary aid, not as hidden keywords.
| Language | Example phrase |
|---|---|
| Estonian | nikliallergia sümptomid |
| Estonian | epikutaantest kuidas käib |
| Finnish | nikkeliallergia oireet |
| Russian | аллергия на никель симптомы |
| English | MI allergy which products |
Evidence and provenance
The evidence map below records the primary, official or openly licensed material chosen for this guide. It is deliberately visible so a reader can tell the difference between a rule published by an authority, a measured dataset and an editorial explanation.
Source: European baseline series (ESCD, Contact Dermatitis, published), CosIng (European Commission, reusable with attribution), EU Cosmetics Regulation 1223/2009 annexes (EUR-Lex, reusable). · checked 2026-09-09
Source names are preserved even where an authority changes its web address. No figure is added to this launch page unless it is already present in the cited source description or can be computed from a named dataset.
Scope and boundaries
/allergy is pollen and food; /skin defines ingredients. This is the delayed contact allergy that a patch test finds, which neither covers.
Connected TempoLife guides
The following paths are the intentional hand-offs named in the brief. They keep adjacent subjects separate while making the next useful reference easy to find.
Skin
Continue to the related TempoLife reference.
Eczema
Continue to the related TempoLife reference.
Jobs
Continue to the related TempoLife reference.
Why it belongs on TempoLife
/skin for the INCI names, /eczema for hand dermatitis, /jobs.
Frequently asked questions
What does this guide cover?
The European baseline series is a published, structured list — that is ~35 item pages, one per allergen, each saying what it is, where it hides and how to avoid it: nickel, cobalt, chromate, fragrance mix I and II, Myroxylon pereirae, methylisothiazolinone and MI/MCI, formaldehyde releasers, para-phenylenediamine in hair dye, colophonium, rubber accelerators, lanolin, propolis. Plus the process pages: what a patch test week involves, why it is not a blood test or a prick test, reading a plus-plus result, hand…
What evidence does it use?
European baseline series (ESCD, Contact Dermatitis, published), CosIng (European Commission, reusable with attribution), EU Cosmetics Regulation 1223/2009 annexes (EUR-Lex, reusable).
Where does this guide stop?
/allergy is pollen and food; /skin defines ingredients. This is the delayed contact allergy that a patch test finds, which neither covers.
Turn the reference into a routine
TempoLife brings food, movement, sleep and everyday health habits into one private place when you want to track what happens next.