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Scarring hair loss, also known as cicatricial alopecia, is the loss of hair which is accompanied with scarring. This is in contrast to non scarring hair loss . It can be caused by a diverse group of rare disorders that destroy the hair follicle , replace it with scar tissue , and cause permanent hair loss.
Non scarring hair loss, also known as noncicatricial alopecia is the loss of hair without any scarring being present. [1] There is typically little inflammation and irritation, but hair loss is significant. This is in contrast to scarring hair loss during which hair follicles are replaced with scar tissue as a result of inflammation.
There is a risk of metastasis starting more than 10 years [citation needed] after diagnosable appearance of squamous-cell carcinoma, but the risk is low, [specify] though much [specify] higher than with basal-cell carcinoma. Squamous-cell cancers of the lip and ears have high rates of local recurrence and distant metastasis. [27]
Hair loss may occur if the lesions are on the scalp. [3] The lesions can then develop severe scarring, and the centre areas may appear lighter in color with a rim darker than the normal skin. [3] These lesions can last for years without treatment. [4] Patients with systemic lupus erythematous develop discoid lupus lesions with some frequency. [4]
Frontal fibrosing alopecia is the frontotemporal hairline recession and eyebrow loss in postmenopausal women that is associated with perifollicular erythema, especially along the hairline. [ 2 ] [ 3 ] : 648 It is considered to be a clinical variant of lichen planopilaris .
Alopecia totalis is the loss of all hair on the head and face.Its causes are unclear, but believed to be autoimmune.Research suggests there may be a genetic component linked to developing alopecia totalis; the presence of DRB1*0401 and DQB1*0301, both of which are human leukocyte antigens (HLA), were found to be associated with long-standing alopecia totalis.
AC almost always affects the lower lip and only rarely the upper lip, probably because the lower lip is more exposed to the sun. [7] In the unusual cases reported where it affects the upper lip, this may be due to upper lip prominence. [7] The commissures (corners of the mouth) are not usually involved. [2] [6]
Adoption of ICD-10-CM was slow in the United States. Since 1979, the US had required ICD-9-CM codes [11] for Medicare and Medicaid claims, and most of the rest of the American medical industry followed suit. On 1 January 1999 the ICD-10 (without clinical extensions) was adopted for reporting mortality, but ICD-9-CM was still used for morbidity ...
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