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Eczema
Eczema
Clinical features Seborrheic dermatitis is the most common form of eczema affecting anogenital skin, followed by irritant contact eczema. Eczema, particularly seborrheic dermatitis, is more common than many other inflammatory dermatoses in uncircumcised males.1 Allergic contact eczema is rare at genital sites and occurs more typically in a perianal distribution. Involvement of genital skin with atopic eczema is rare.
In infants, eczematous reactions are often seen in the napkin area. Most of these represent a primary irritant dermatitis. Seborrheic dermatitis and a psoriasiform napkin rash can also occur. Some, but not all, patients with the latter condition develop psoriasis later in life.2
Histologic features The histologic features are identical to those seen in eczema affecting other areas of the skin. Psoriasiform napkin rashes show histologic features that overlap with psoriasis.