Skin Diseases

Skin Diseases

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Kyrle disease

Kyrle disease was first described in 1916 by Kyrle as 'hyperkeratosis follicularis et follicularis in cutem penetrans' and identified as a perforating disease. To this day controversy remains about the classification of Kyrle disease - is it a distinct disease entity, part of the spectrum of acquired perforating dermatosis or a subtype of acquired perforating collagenosis?

Currently, two major perforating diseases include reactive perforating collagenosis and elastosis perforans serpiginosa. In some literature, acquired perforating dermatosis is a third major group and is a catch-all term for cases of perforating disease arising in adults, usually associated with a systemic disease.

Kyrle disease is characterised by the formation of large papules with central keratin plugs and is often associated with hepatic, renal or diabetic disorders. It can affect both men and women throughout life, although the average age at time of presentation is 30 years.

The cause of the disease is unknown. Some cases appear to be idiopathic (no known triggers), or inherited. What has been found is that Kyrle disease appears to occur more frequently in patients with certain systemic disorders, these include:

- Diabetes mellitus

- Renal disease (chronic renal failure, albuminuria, elevated serum creatinine, abnormal creatinine clearance, polyuria)

- Hepatic abnormalities (alcoholic cirrhosis)

- Congestive heart failure

Signs and symptoms

Lesions begin as small papules with silvery scales that eventually grow to about 1.5cm in diameter to form red-brown nodules with a central keratin (horny) plug. Multiple lesions may coalesce to form large keratotic plaques. Lesions occur mostly on the legs but also develop on the arms and in the head and neck region. The palms and soles are rarely affected. Without treatment lesions heal spontaneously but new ones continue to develop.

Lesions are not painful but patients may experience intense pruritus (itching).

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Donah Shine

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