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About Eczema and diagnosis , Classification of steroids
by strength, Characteristics by age
The term eczema is used for a variety of skin conditions characterised
by epidermal inflammation. Sometimes dermatitis is used synonymously,
although dermatitis may describe any skin inflammation.
Categorised as exogenous (of external origin) or endogenous (originating
within a structure, organ, or organism) depending on the cause.
Examples of exogenous eczemas include allergic, irritant, and photosensitivity
eczema.
Endogenous eczemas include atopic, discoid (coin-shaped), gravitational,
and seborrhoeic eczema.
However, this classification is not always helpful, as there may be many
different causes of eczema, both endogenous and exogenous in an individual
patient.
While the areas of skin affected vary in different types, skin lesions
share certain common features. In acute eczema the skin is typically red
and inflamed with boils,papules and blisters. In chronic eczema the skin
may show the same but be more scaly, pigmented and thickened. Two of the
most common forms of eczema are atopic eczema and seborrhoeic
dermatitis.
Atopic eczema predominantly affects infants and children although adults
may also suffer. The skin is itchy and there is chronic or relapsing dermatitis
in which the face and neck and flexures of the elbows and knees are involved
most often and are excoriated and lichenified.
Cure of atopic eczema is said to be unrealistic, but good control can
be achieved with proper management. The Surestop
synergy gives relief upto 60-75%, sometimes even upto 90% where only
slight flareups can be seen in future recurrences, but not a complete
elimination.
Surestop also helps to reduce Seborrhoeic dermatitis, which is a common
eczematous skin disorder in which erythematous pruritic patches of skin
may become either scaly or exudative and crusted. Scaling lesions are
the type most commonly observed. In some cases, known as seborrhoeic folliculitis,
there may also be follicular papules or pustules.
Seborrhoeic dermatitis occurs in regions of the body where sebaceous
glands are plentiful, such as the scalp, face, and chest, although the
condition is not associated with increased sebum production. The cause
of seborrhoeic dermatitis is unknown, although it might be related to
overgrowth with Pityrosporum ovale, a normal commensal yeast. Treatment
is suppressive rather than curative. Dandruff due to normal shedding of
scalp skin is treated similarly to seborrhoeic dermatitis of the scalp.
Echinacea preparations are used for the external treatment of hard-to-heal
wounds, eczema, burns, psoriasis, herpes simplex, etc.
Diagnosing Eczema
Hanafin and Rajka’s diagnostic criteria for eczema:
> Itching
> Dryness of the skin
> Skin Inflammation
> Secondary infection of the skin
> Frequent flare-ups of eczema activity
> Family history of eczema, hay fever or asthma
A UK working party in 1994 refined and developed further based on a
validated set of epidemiological data. They suggested the following:
Eczema is an itchy skin condition ... plus three or more of the
following features:
> Involvement of skin in front of the elbows, behind the knees, the
side of the neck or on the cheeks of children
> Personal history of asthma or hay fever, a history of atopic disease
in first degree relatives in those under the age of 4 years
> General dry skin in the previous year
> Eczema present in the folds of skin in front or the elbows or behind
the knees of on the face or outer aspects of the limbs in the under 4
year olds
> Eczema starting before the age of 2 years
Steroid strengths
The human body makes it own steroids in the adrenal gland, vital for
the body's normal function and are essentially hormones.
Synthetic steroids are anabolic steroids (build muscle
mass and cause liver damage) and catabolic steroids or glucocorticoids
used to treat eczema. These have anti-inflammatory and immunosuppressive
properties -they damp the activity of various immune cells that cause
inflammation. They have been a very useful medicine, even lifesaving,
in conditions like severe asthma or rheumatoid arthritis.
The down side is that if they when used at a high dose
for a prolonged period, side-effects include
fluid retention, suppression of adrenal glands, weight gain, bone thinning,
decreased growth in children, high blood pressure and loss of muscle mass
and hence used in treating very severe flare-up of eczema, and for the
shortest period of time to minimise serious side-effects. Topical creams
were developed to try to produce the same anti-inflammatory properties
without the systemic side-effeccts on the rest of the body.
Topical steroids classified by strength -
| Group/Strength |
Chemical Name (Trade Name) |
| 4/Mild |
Desonide (Desocort)
Hydrocortisone 0.5% (Cortate, Claritin, Cortoderm)
Hydrocortisone Acetate 0.5% (Cortef, Hyderm) |
| 3/Moderate |
Betamethasone valerate (Betnovate)
Betamethasone valerate (Celestoderm)
Clobetasone 17-Butyrate 0.05% (Eumovate)
Desonide 0.05% (Desocort)
Hydrocortisone acetate 1.0% (Cortef, Hyderm)
Hydrocortisone valerate 0.2% (Westcort, Hydroval)
Prednicarbate 0.1% (Dermatop)
Triamcinolone Acetonide 0.1% (Kenalog,Traiderm)
0.05% aclometasone dipropionate (Modrasone)
0.025% betamethasone valerate (Betnovate RD)
0.00625% fluocinolone acetonide (1/4 Synalar)
|
| 2b/Moderately Strong |
Amcinonide 0.1% (Cyclocort)
Betamethasone dipropionate 0.5 mg (Diprolene, generics)
Betamethasone valerate 0.05% (Betaderm, Celestoderm,Prevex)
Desoximetasone 0.25% (Desoxi,Topicort)
Diflucortolone valerate 0.1% (Nerisone)
Fluocinonlone acetonide 0.25% (Derma,Fluoderm,Synalar)
Fluocinonide 0.05% (Lidemol,Lidex,Tyderm,Tiamol,Topsyn)
|
| 2a/Strong |
0.1% betamethasone valerate (Betnovate)
0.025% fluocinolone acetonide (Synalar)
0.1% mometasone furoate (Elocon)*
0.05% fluticasone propionate (Cutivate)* |
| 1/Very strong |
0.3% diflucortolone valerate (Nerisone forte)
Betamethasone dipropionate (Diprolene)
Clobetasol 17-Propionate 0.05% (Dermovate)
Halobetasolpropionate (Ultravate)
Halcinonide 0.1% (Halog) |
*once-daily use only
From various sources, this table is a reference only.
Eczema varies by age
Baby/ Infant Eczema
Usually on the face, upper chest, scalp and neck. Forearms and
shins may be involved later.
Symptoms
Tiny blisters may occur which open and may leak fluid.
Dry skin: The skin overall is very dry.
It is unusual to have involvement around the mouth or nose.
If the condition is severe, it may involve the whole skin.
The diaper area is usually free of eczema.
Between the ages of twelve and eighteen months, there is a tendency for
the skin to become thickened particularly on the forearms and shins due
to crawling.
Childhood Eczema
Between 4-10 yrs, eczema is usually more localized than in the infant.
Symptoms:
Usually in flexures -like sides of the neck, folds of the elbows, and
back of the knees
The skin is often dry and red
There are often excorations and thickening or lichenification of the skin
from scratching
The skin may have light or dark discoloration
About 10-15% continue to have active eczema as they grow older, while
most others will have ongoing dry skin issues.
Teen/ Adult
Less acute than in children. Commonly, hands, feet, aound the eyelids
and ears. Sometimes flexures of elbows and knees.
Any of the following conditions may occur:
Xerosis - dry scaly skin with no obvious inflammation,
poor skin barrier function is a feature
Keratosis Pilaris - horny plugs in hair follicles especially
on the outer arms and thighs
Dennie-Morgan lines - a single or double line or fold
under both lower eyelids
Palmoplantar Hyperlinearity – prominent and increased
creases on the palms and soles
Ichthyosis Vulgaris - a genetic condition of increased
scaling especially on the lower legs
Pityriasis Alba - hypopigmented, whitish slightly scaly
patches on the face especially in darker skin
Chelitis - chapped lips of cracks in the corners of the
mouth
Lichen Simplex Chronicus - thickend leathery lined skin
from chronic rubbing
Nodular Prurigo - itchy, often multiple nodules especially
on the forearms and lower legs
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