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Auricular eczema is an eczema of the ear that may involve the helix, postauricular fold, and external auditory canal, with the most frequently affected site being the external canal, where it is often a manifestation of seborrheic dermatitis or allergic contact dermatitis. [1] This is an neuroallergic inflammation of skin with evident itch.
However, if there are chronic skin conditions that affect the ear canal skin, such as atopic dermatitis, seborrheic dermatitis, psoriasis or abnormalities of keratin production, or if there has been a break in the skin from trauma, even the normal bacteria found in the ear canal may cause infection and full-blown symptoms of external otitis. [7]
Generally, diseases outlined within the ICD-10 codes B35-B49 within Chapter I: Certain infectious and parasitic diseases should be included in this category. Mycosis-related cutaneous conditions are caused by fungi or yeasts , and may present as either a superficial or deep infection of the skin.
Although there are a multitude of varying appearances, the id reaction often presents with symmetrical red patches of eczema with papules and vesicles, particularly on the outer sides of the arms, face and trunk which occur suddenly and are intensely itchy occur a few days to a week after the initial allergic or irritant dermatitis.
Erythroderma is generalized exfoliative dermatitis, which involves 90% or more of the patient's skin. [3] The most common cause of erythroderma is exacerbation of an underlying skin disease, such as Harlequin-type ichthyosis, psoriasis, contact dermatitis, seborrheic dermatitis, lichen planus, pityriasis rubra pilaris or a drug reaction, such as the use of topical steroids. [4]
Otomycosis does not usually cause as much canal skin edema as does acute bacterial external otitis.While a severe pressure type of pain is a prominent feature of advanced cases, the ear is usually much less tender, if at all, to traction or tragal pressure.
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Immunosuppressants have seen use at low doses alongside systemic steroids and phototherapy for chronic symptoms of senile pruritus or dermatitis. Senile pruritus could have connections to the loss of tolerance for antigens on the skin that result from aging skin, which can potentially lead to other autoimmune disorders like bullous pemphigoid .