Stucco keratosis
Introduction
Introduction to stucco keratosis Stucco keratosis damage 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. basic knowledge The proportion of illness: 0.003% Susceptible people: no specific population Mode of infection: non-infectious Complications: bacterial infection
Cause
Causes of stucco keratosis
(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 lesions are also seen in asphalt and tar workers.
Prevention
Stucco keratosis prevention
The cause of the disease is not clear and may be related to heat or chemical damage. Histologically, the disease manifests itself as hyperkeratotic keratosis. Therefore, the prevention method should be carried out for the etiology. In the case of chemical experiments or high temperature workers, self-protection should be taken. If wearing safety gloves, direct damage to chemicals can be avoided. Secondly, patients who already have this disease should be actively treated to avoid serious complications caused by exacerbations.
Complication
Stucco keratosis complications Complications bacterial infection
Because the disease mainly causes skin damage and skin integrity is destroyed, skin integrity can be damaged to induce skin bacterial infection or fungal infection, usually secondary to low constitution, long-term use of immunosuppressants and nails, etc. Patients with fungal infections, such as concurrent bacterial infections, may have symptoms such as fever, swelling of the skin, ulceration, and purulent secretion. Severe cases can lead to sepsis, which should be brought to the attention of clinicians.
Symptom
Stucco keratosis symptoms Common symptoms Skin lesions like dry stucco
The skin lesions are like dry stucco, loose and adhered to the surface of the skin, easy to remove, the lesions are 1 to 5 mm in diameter, and the number is several to dozens. It occurs in the lower limbs, especially in the vicinity of the Achilles tendon, also in the back of the foot. And the back of the hand, never invade the palmar, torso and head.
Examine
Examination of stucco keratosis
Histopathology: the epidermis is papilloma and loose keratosis, like "chapel apex", visible mild acanthosis, but no parakeratosis and pseudo-corner cysts, thickened granular layer, flat base of the tumor, visible A mild inflammatory response around the blood vessels.
Diagnosis
Diagnosis and identification of stucco keratosis
According to the clinical manifestations, the characteristics of skin lesions, histopathology can be diagnosed.
Differential diagnosis
Seborrheic keratosis
Occurs in the face, chest, back, etc., skin lesions brown or brownish black, the surface has greasy scales or sputum, histopathological examination of the disease may have parakeratosis, pseudo-corner cysts and basal pigmentation, Can be identified with stucco keratosis.
2. Actinic keratosis
The disease mainly occurs in elderly males. The exposed parts such as face and back of the hand are more common. Histopathological examination shows that epidermal cells are atypical, and mitotic figures are common and can be identified.
3. Large cell acanthoma
The disease is mild keratosis, clear border rash, usually single, occurs in the exposed site, histopathology shows that the nucleus is large, and even the mitotic figures are active, which can be distinguished from stucco keratosis.
