Question 1

What is eczema, and what actually helps?

Accepted Answer

A condition in which the skin's **barrier function is impaired**, allowing moisture out and irritants and allergens in, producing inflammation, itching and dryness — and understanding it as a barrier problem rather than only an inflammation problem explains what treatment actually does.

**The mechanism.** Genetic differences affecting skin barrier proteins, combined with immune factors, leave the skin unable to retain water and unusually permeable. Irritants penetrate, the immune system responds, and the resulting itch leads to scratching, which further damages the barrier — **the itch-scratch cycle**, which is what makes it self-perpetuating.

**What the treatments do:**

**Emollients** are the foundation and the most under-used. They restore the barrier, and should be applied **generously and frequently** — considerably more than most people use, including when the skin looks clear. Ointments are greasier and more effective than lotions. **Applying emollient consistently reduces the need for steroids substantially.**

**Topical steroids** reduce inflammation during flares. **Steroid phobia is a well-documented problem**: fear of side effects leads to under-treatment, which prolongs flares and results in more steroid use overall, not less. Used appropriately, in the right potency for the site and for a defined period, they are safe and effective.

**Other prescribed treatments** include calcineurin inhibitors for delicate areas, and for severe disease newer biologic and targeted oral treatments that have substantially changed outcomes.

**Practical measures with evidence:** soap substitutes rather than soap, since detergents strip the barrier; short lukewarm rather than hot baths; emollient immediately after washing while skin is damp; cotton rather than wool next to skin; keeping nails short; and managing heat and sweating, which are common triggers.

**On food.** Food allergy is associated with eczema, particularly in infants, and **eliminating foods without proper assessment is not recommended** — it frequently does not help and carries nutritional risk.

**What is not supported:** most alternative topical products, and restrictive elimination diets undertaken without guidance.

**Flares are normal**, and the aim is control rather than cure.

General information, not medical advice.

Question 2

Why do cuts itch as they heal?

Accepted Answer

Itching during healing is usually a sign the repair process is active, and several mechanisms contribute at once. Histamine release. During the inflammatory and proliferative phases, immune cells

Question 3

What actually happens in an allergic reaction?

Accepted Answer

The immune system misidentifies a harmless substance as a threat and mounts a defence against it — and the damage comes entirely from your own response, not from the substance itself. The mechanism,

Question 4

Should you cover a cut or let it breathe?

Accepted Answer

Cover it. The advice to let wounds "breathe" and form a hard scab is widely repeated and contradicted by decades of wound healing research. Why covering works better. The key concept is moist wound

Question 5

What is inflammation and why is it not always bad?

Accepted Answer

Inflammation is the immune system's response to damage or threat. It is fundamentally protective — the problem is not inflammation itself but inflammation that does not switch off. Acute inflammation

Question 6

What do SPF numbers actually mean, and how should sunscreen be used?

Accepted Answer

SPF measures protection against UVB only — the radiation that causes sunburn — and the number is a ratio rather than a percentage or a time, which is the source of almost every misunderstanding about

Question 7

Why do scars form instead of the skin going back to normal?

Accepted Answer

Because adult skin repairs rather than regenerates, and speed is prioritised over fidelity. Normal skin has collagen arranged in a basket-weave pattern — fibres running in many directions, which

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