Skin lesions look like dry stucco

Introduction The skin lesions are like dry stucco, loose and adhering to the surface of the skin, which is a clinical diagnosis of stucco keratosis. Stucco keratosis, also known as verruca dorsi manus et pedis, was first reported by Kocsard in 1958. The disease is similar to seborrheic keratosis, but smaller and papular. Occurred in the extremities of the limbs, mainly in the lower limbs, especially in the vicinity of the Achilles tendon, also seen in the forearm and palmar. It has a diameter of about 3 to 10 mm. The adhesion is not strong, so it is easy to scrape, the number varies from two to more than hundreds. Most of the men who are over 40 years old, especially in the dry season of winter, the lesions are more obvious. Histologically, the disease manifests itself as hyperkeratotic keratosis. In terms of treatment, it is generally used to lubricate the skin with a lubricant to make the keratinized scales fall off.

Cause

(1) Causes of the disease

The cause is still unknown and may be related to heat or chemical damage.

(two) pathogenesis

The pathogenesis is still unclear. This disease is often seen in Australia and may be related to exposure. Similar skin lesions are also found in asphalt and tar workers.

an examination

The skin lesions resemble a dry stucco, loosely adhering to the surface of the skin and easily removed. The lesions have a diameter of 1 to 5 mm and a number of several to several tens of. Occurs in the lower limbs, especially near the Achilles tendon. Also found on the back of the foot, forearm and back of the hand, never invading the palm, trunk and head.

Histopathology: The epidermis is papilloma and loose keratosis, which is like a church-like apex, showing mild acanthosis, but no keratosis and pseudocyst. The granular layer is thickened and the base of the tumor is flat. A slight inflammatory response around the blood vessels can be seen.

Differential diagnosis

The skin is dry and waxy yellow: the whole mononuclear macrophages and the nervous system have a large number of foam cells containing sphingomyelin. Higher Xue's disease is rare. It is autosomal recessive, with more Jewish morbidity, and its incidence rate is as high as 1/25000. There are currently at least five types.

Dry skin means that the skin becomes thicker and rougher due to seasonal changes, lack of water and anemia. In autumn and winter, the sebum and water secretion of the human body will gradually decrease, and the skin will become dry. It is called dry skin. Especially in middle-aged and elderly people, the surface of the skin will appear more rough due to the large amount of water, and they will often see their hands and feet. There will be chapped and itchy skin in the calf. If you can't stand the dry itching, you will continue to scratch itching, causing skin wounds, causing inflammation or pus.

The disease is easily scraped off without bleeding, so it can be differentiated from seborrheic keratosis.

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