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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.
When the ear is inspected, the canal appears red and swollen in well-developed cases. The ear canal may also appear eczema-like, with scaly shedding of skin. Touching or moving the outer ear increases the pain, and this maneuver on physical exam is important in establishing the clinical diagnosis.
This category reflects the organization of International Statistical Classification of Diseases and Related Health Problems, 10th Revision. Generally, diseases outlined within the ICD-10 codes H60-H62 within Chapter VIII: Diseases of the ear and mastoid process should be included in this category.
Chondrodermatitis nodularis chronica helicis (CNCH) is a small, nodular, tender, chronic inflammatory lesion occurring on the helix of the ear, most often in men. [ 2 ] : 610 it often presents as a benign painful erythematous nodule fixed to the cartilage of the helix or antihelix of the external ear. [ 3 ]
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.
A pimple in the ear canal is often more uncomfortable than a pimple on the outer ear as the skin is more sensitive and the area is closer to the eardrum. Also, “pimples in this area are harder ...
The most common aetiology of acute otitis externa is bacterial infection, [5] while chronic cases are often associated with underlying skin diseases such as eczema or psoriasis. [6] A third form, malignant otitis externa, or necrotising otitis externa, is a potentially life-threatening, invasive infection of the external auditory canal and ...
Biopsies are typically not necessary, and cannot be used to rule out other atopic dermatitis or other eczemas. [9] [10] However, patch testing may be employed to rule out irritants (contact dermatitis) as a cause. [6] [11] In children, nummular dermatitis is commonly confused with tinea corporis. [8]