Dermatitis, also known as eczema,
is a skin irritation characterized by red, flaky skin, sometimes with
cracks or tiny blisters. Dermatitis is extremely itchy, but scratching
damages the fragile skin and exacerbates the problem so it is
important for people with eczema to try to leave the area alone.

Typical, mild dermatitis.
Types
There are several causes of dermatitis, but the most common ones
are related to
allergies. Atopic eczema, the most common, is
caused by general systemic allergic reactions, as opposed to contact
with an irritant. It is very common in people with related allergic
conditions, including
asthma
or chronic
hay
fever. Allergic contact dermatitis, as the name
implies, is the result of direct contact with an irritant. One of the
most common causes of this form are buttons and rivets in jeans, which
contain nickel. Irritant contact dermatitis is
similar but is caused by a reaction to some chemical substance, often
unrinsed detergents left on clothing or various household chemicals
being handled.
Stress and
anxiety
often make otherwise minor outbreaks spread.
Several other forms appear unrelated to the main allergic causes.
Infantile seborrhoeic eczema, also known as
cradle cap, forms on the head and quickly spreads. It looks
like normal dermatitis, but apparently doesn't itch and eventually
goes away on its own. Varicose eczema occurs later in
life, the result of poor circulation in the legs. Finally
discoid eczema suddenly appears as small disk shaped spots of
severe dermatitis, but disappear on their own.
Treatment
Dermatitis is often treated with prescribed
cortisone creams and lotions, but these must be used sparingly as
they cause the skin to become thinner and more fragile with long-term
use. Dermatitis severely dries out the skin, and keeping the affected
area moistened with
vitamin A,
D
and/or
E
can promote healing and retain natural moisture. Other than direct
treatments of the symptoms, no "cure" for dermatitis is known, and
even cortisone treatments often have only minor effects on the
problem.
Some alternative (and even conventional) medicine sources state
that oatmeal in solution applied topically has a healing effect. This
has been noticed through occupational sources, where a person's skin
is often exposed to oatmeal at work, e.g., through baking or milling.
Often such people retain exceptionally soft and healthy skin into old
age.