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Nummular dermatitis (commonly known as nummular eczema or discoid eczema) is one of the many forms of dermatitis. [1] It is characterized by round or oval-shaped itchy lesions. [ 2 ] The name comes from the Latin word " nummus ," which means "coin."
The management of ear eczema will depend on the type of eczema diagnosed upon presentation. Generally, ear toileting and care are advised to help relieve symptoms. Washing the ears with an emollient and drying them is one way to achieve this. [2] Patients are advised against putting anything in the ears or scratching them. [2]
Dermatophytosis, also known as tinea and ringworm, is a fungal infection of the skin [2] (a dermatomycosis), that may affect skin, hair, and nails. [1] Typically it results in a red, itchy, scaly, circular rash. [ 1 ]
Each involves the external ear. The difference between them is that a cyst does not connect with the skin, but a sinus does. [3] Frequency of preauricular sinus differs depending the population: 0.1–0.9% in the US, 0.9% in the UK, and 4–10% in Asia and parts of Africa. [4]
Microsporum audouinii causes the infections Tinea capitis (scalp ringworm) and Tinea corporis. [2] These superficial dermal diseases are generally found in prepubescent children (starting at 6 months) and rarely affect adults. [3] There are a few reasons why children are more susceptible to M. audouinii.
Microsporum gypseum. Microsporum is a genus of fungi that causes tinea capitis, tinea corporis, ringworm, and other dermatophytoses (fungal infections of the skin). Microsporum forms both macroconidia (large asexual reproductive structures) and microconidia (smaller asexual reproductive structures) on short conidiophores.
Acute otitis media in children with moderate to severe bulging of the tympanic membrane or new onset of otorrhea (drainage) is not due to external otitis. Also, the diagnosis may be made in children who have mild bulging of the ear drum and recent onset of ear pain (less than 48 hours) or intense erythema (redness) of the ear drum.
The clinical presentation is typically single or multiple patches of hair loss, sometimes with a 'black dot' pattern (often with broken-off hairs), that may be accompanied by inflammation, scaling, pustules, and itching. Uncommon in adults, tinea capitis is predominantly seen in pre-pubertal children, more often boys than girls.