Age Related Clinical Spectrum of Atopic Dermatitis: A Position Paper
Received Date: Apr 16, 2018 / Accepted Date: May 15, 2018 / Published Date: May 21, 2018
Atopic dermatitis is well-known age-related/oriented caption recognized through well-defined clinical features usually having an onset in infancy invariably marching towards childhood, adolescent adult and elderly (senile) phases. This particular aspect seems unique, and was succinctly explored through literature, the highlights of which form the position paper for vivid comprehension of evolving clinical spectrum, which might add up to elevation of dreaded symtomatology, a part component of the entity. The criteria for intrinsic and extrinsic variant of AD, in particular, are emphasized.
Keywords: Atopic dermatitis; Intrinsic; Extrinsic
Atopic dermatitis (AD) a well-conceived age-oriented entity, recognizable through wide spectrum clinical connotation , is an intriguing subject for walk the talk. AD overwhelming impact on quality of life as a public health problem is now being perceived because of its increasing global prevalence affecting both children and adults. Its prevalence is 20% in children and up-to 3% in adults (Figure 1). Nomenclature task force of European academy of allergy and clinical immunology (EAACI) after elaborate deliberations had put-up a ‘position paper’ on atopic dermatitis, wherein a new nomenclature atopic eczema/dermatitis syndrome (AEDS) was proposed to cover up wide ranging clinical manifestations of AD, emphasizing that the condition is no single but has several components in its fold. Accordingly, the adult-onset AD was divided into intrinsic/nonallergic (non-I.e.-mediated)  type of atopic dermatitis (constitutional dermatitis) and extrinsic/allergic (Figure 2)(I.e.-associated) [4,5] type, the outline of which are defined in the adjoining table 1. Its etiopathogenesis is largely elusive , and a subject matter of continuing dialogue Currently, the turbulence in the functions of stratum corneum [7-9] the skin barrier (Figure 3), are being incriminated through genetically determined risk factors along-with the immune system dysfunction . The concomitance of atopic dermatitis in immunocompromised/ susceptible genetic and metabolic disorders might reenforce the preceding observations. The proposed hypothesis seemed to have added new dimensions to the comprehension of it’s under currents and perspective studies. Simultaneously, it is worthwhile to retrieve  the clinical undertones in childhood phase of AD, facilitating to establish the continuous march of atopic dermatitis from childhood, adult-onset [12-14] and senile/elderly , invariably marked by remissions and recurrence, its hallmark. Furthermore, aforementioned observations are scintillating, and might raise expectations of comprehensive management of non-allergic atopic eczema/dermatitis syndrome (AEDS) (Figure 4).
|Less than 2 years||Typically develops after 2nd month of life|
|Edematous papules, papulo-vesicles, and/or evolving plaques with oozing and crusting over the cheeks and centro-facial sparing|
|Face and neck are affected in over 90% of the patients, in first 6 months|
|Sparing of diaper area|
|2 to 12 years||Lichenified, less exudative lesions|
|Flexural eczema confined to antecubital and popliteal fossae|
|Head, especially affecting peri-orificial region, neck, wrists, hands, ankles and feet|
|Pronounced and widespread xerosis|
|Adolescent Adult ||More than 12 and less than 18 years adult more than 18 years|
|Chronic hand dermatitis, both endogenous and exogenous components|
|Facial dermatitis with severe eyelid involvement in a few|
|Erythrodermic disease prominent in those with continuous AD since childhood|
|Senile atopic dermatitis or atopic dermatitis in the elderly [19,20] pattern, types and clinical features: More than 60 years|
|Senile /elderly onset , either due to||Recurrence of AD with a history of classic childhood AD or|
|Continuation of adult-onset AD marching to AD in the elderly|
|Intrinsic atopic dermatitis 1(iAD) non-allergic atopic eczema/dermatitis syndrome (AEDS) 2||Normal serum IgE levels <150-200 kU/L|
|Serum specific IgE, none|
|Association with respiratory diseases, none|
|Skin prick testing (SPT) to common aero or food allergens|
|IgE associated allergic atopic dermatitis, Extrinsic atopic dermatitis (eAD)||Invariably serum IgE level high>150-200 kU/L|
|Serum specific IgE antibodies Positive|
|Associated allergic rhinitis and/or asthma|
|SPT Test Positive|
|Environmental factors, triggers||House dust mite|
|Thickening of the skin, variable scaling arising secondary to repetitive scratching/rubbing, lichenification|
Table 1: Atopic dermatitis: clinical undertones of age related orientation.
Atopic dermatitis (AD) has always been focus of walk the talk ever since its initial narrative. Several concerns facets seem to have eluded those chase into unfold its variety of known as well as unknown undertones, an overview of historical  vignette may provide a requisite inputs in comprehending an overall position prevailing currently microanatomy of epidermis including stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum and stratum basale. The stratum corneum the formatable skin barrier has been moted to play a significant role in its etiopathogenesis through its barriers physiological consituants comprised of loricirin, involucrin, trichohyalin, S 100 proteins and small proline-rich proteins. The stratum corneum has a built-in strength derived from other constiuants layers namely keratins 1 and 10, keratin 2, profilaggrin, transglutaminase-3.
An exhorted endeavor to evolve status document to decipher the impact of age on course/natural history of atopic dermatitis, is a vital issue for comprehending not only its pattern, type, and also the clinical features, the succinct briefs of which are meticulously scanned, emphasizing the criteria of diagnosis of Intrinsic atopic dermatitis (iAD) non-allergic atopic eczema/dermatitis syndrome (AEDS) alongwith Extrinsic/allergic (IgE-associated) dermatitis.
Atopic dermatitis is an age-related entity extra-ordinary.
Recognized through phases namely infantile, childhood, adolescent, adult and elderly (senile).
Itching/pruritis and/or xerosis is a common ingredient of its symtomatology.
Complimented by lichenification of flexures subsequently also of extenses of the body.
Extrinsic and intrinsic atopic dermatitis are now being envisaged as currently well-conceived and must be documented accordingly, elevated level of immunoglobulin IgE in extrinsic, in particular, is imperative in all phases, especially in senile/elderly .
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Citation: Sehgal VN (2018) Age Related Clinical Spectrum of Atopic Dermatitis: A Position Paper. J Dermatitis 3:114.
Copyright: © 2018 Sehgal VN. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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