Clarity Test checklist →

Disclaimer

Educational — not medical advice.

Clarity exists to help you ask better questions with a clinician. It does not replace one. Please read this before acting on anything here.

Not a diagnosis or treatment

Nothing on this site is medical advice, a diagnosis, or a treatment protocol. The content is educational and evidence-forward: it summarises and grades published literature about how body systems may relate to skin conditions. It cannot account for your individual history, medication, or circumstances, and it is not a substitute for personalised care.

Always consult a qualified practitioner

Always seek the advice of a physician or other suitably qualified health professional with any questions about a medical condition or before making changes to diet, supplements, medication, or testing. Never disregard professional medical advice, or delay seeking it, because of something you read here. If you think you may have a medical emergency, contact your local emergency services immediately.

Hypothesis-generating, not advocacy

The functional / integrative lens here is presented as an evidence-forward way to generate hypotheses to explore with a clinician — not as an endorsement of any therapy, product, practitioner, or protocol. Every claim carries an A–D evidence grade describing how strong the underlying research is, and many links are early and labelled as such. A grade is a statement about the literature, never a recommendation.

No cure claims

Clarity makes no claim that any system, test, or finding prevents, treats, or cures eczema or any other condition. Tests are described so you can discuss whether they are appropriate for you with a professional — not so you can self-order or self-interpret them.

Accuracy & limitations

The literature is summarised in good faith and passes a human review gate before publication (see the methodology → ), but evidence evolves and errors are possible. Content is provided “as is”, without warranty, and may be updated or corrected at any time. Citations point to third-party sources Clarity does not control.

Last reviewed: 19 May 2026

Understand how we grade evidence.

The honest answer to “should I trust this?” is on the methodology page — in full.

Read the methodology →

Free: Test-request checklist

A citation-backed list of functional tests worth discussing with your clinician — organised by the body's systems. We email you the PDF after a one-click confirm. Unsubscribe in one click; no spam.