Topics Discussed: dermatitis; dermatology; eczema; pediatric dermatology; skin disorder.
Sections: Atopic Dermatitis, Contact Dermatitis, Other Eczematous Dermatitides, Seborrheic Dermatitis, Diaper Dermatitis, Dermatitis Secondary to Nutritional and Metabolic Disorders, Psoriasis, Other Papulosquamous Disorders, Aquatic Dermatitis, References.
Excerpt:"Primary skin diseases that principally
affect the epidermis may be categorized as either a dermatitis or
a papulosquamous disorder. Dermatitis commonly
denotes inflammation of the epidermis. Eczema generically
denotes edema within the epidermis. Many primary dermatitides are
eczematous in nature, although the term eczema is
often misused interchangeably for atopic dermatitis. In its mildest
or chronic form, edema is seen histopathologically as prominent, toothlike
interconnections between keratinocytes (spongiosis). With more intracellular
fluid accumulation, intraepidermal vesicles are formed. Vesicles
are often subclinical in subacute or chronic eczemas where edema
is mild but present as grossly evident vesicles and bullae in acute
eczemas. Papulosquamous eruptions are characterized by the presence
of erythematous papules or plaques with overlying scale. While eczematous
processes clinically manifest with weeping or crusting, papulosquamous
disorders are associated with little to no edema and thus clinically
tend to be dry...."
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