Eczematous dermatitis

Eczematous dermatitis is an inflammatory skin thingy.

General

Histological findings are nonspecific - the DDx:

• Spongiotic drug reaction.
• Mycosis fungoides.
• Tinea.
• Viral exanthems.

Microscopic

Features:

• Spongiotic dermatitis:
  • Intracellular edema in the epidermis (spongiosis).
    • Cell borders and squamous bridges visible.
  • Chronicity:
    • Acute: epidermal intracellular edema (spongiosis) +/-intraepidermal vesicles.
    • Subacute: spongiosis and parakeratosis.
    • Chronic: psoriasiform epidermal hyperplasia - see lichen simplex chronicus.

See also

• Spongiotic dermatitides.
• Inflammatory skin disorders.