Editing Dermatitis (section)

===Common types===
====Atopic====
[[Atopic dermatitis]] is an allergic disease believed to have a hereditary component and often runs in families whose members have [[asthma]]. Itchy [[rash]] is particularly noticeable on the head and scalp, neck, inside of elbows, behind knees, and buttocks. It is very common in developed countries and rising. Irritant [[contact dermatitis]] is sometimes misdiagnosed as atopic dermatitis. [[Stress (biology)|Stress]] can cause atopic dermatitis to worsen.<ref>[https://nationaleczema.org/eczema/types-of-eczema/atopic-dermatitis/ Atopic Dermatitis]  National Eczema Association.</ref>

====Contact====
[[Contact dermatitis]] is of two types: allergic (resulting from a delayed reaction to an [[allergen]], such as [[poison ivy]], [[nickel]], or [[Balsam of Peru]]),<ref name="dermnetnz1">{{cite web |date=28 December 2013 |title=Balsam of Peru contact allergy |url=http://dermnetnz.org/dermatitis/balsam-of-peru-allergy.html |url-status=live |archive-url=https://web.archive.org/web/20140305094411/http://dermnetnz.org/dermatitis/balsam-of-peru-allergy.html |archive-date=5 March 2014 |access-date=5 March 2014 |publisher=Dermnetnz.org}}</ref> and irritant (resulting from direct reaction to a detergent, such as [[sodium lauryl sulfate]], for example).

Some substances act both as allergen and irritants (wet cement, for example). Other substances cause a problem after sunlight exposure, bringing on [[phototoxic dermatitis]]. About three-quarters of cases of contact eczema are of the irritant type, which is the most common occupational skin disease. Contact eczema is curable, provided the offending substance can be avoided and its traces removed from one's environment. (ICD-10 L23; L24; L56.1; L56.0)

====Seborrhoeic====
[[Seborrhoeic dermatitis]] or seborrheic dermatitis is a condition sometimes classified as a form of eczema that is closely related to [[dandruff]]. It causes dry or greasy peeling of the scalp, eyebrows, and face, and sometimes trunk. In newborns, it causes a thick, yellow, crusty scalp rash called [[cradle cap]], which seems related to lack of [[biotin]] and is often curable. (ICD-10 L21; L21.0)

There is a connection between seborrheic dermatitis and ''[[Malassezia]]'' fungus, and [[antifungal]]s such as anti-dandruff shampoo can be helpful in treating it.<ref name="Bor2019" />