Horny thickening

Introduction A metabolite layer of normal normal skin, about 10 to 15 layers, the top layer will continue to fall off, giving up space to the cells that are newly pushed up. The cells in the stratum corneum are dead cells, but they are an important barrier to protect the skin, preventing direct invasion of foreign bacteria and loss of skin water. A normal metabolism of the skin does not require external force to exfoliate, because after a certain period of time, the outermost cells will automatically fall off. The metabolic time of cells from live to dead is about 14 to 28 days. The older the time, the longer the metabolism takes, and can reach 35 days or more. However, due to the poor external environmental conditions of contact, the imbalance of diet, abnormal working schedule, staying up late, smoking, drinking, and emotions often cause the metabolic rate to slow down, and abnormal metabolism makes the keratinocytes unable to fall off naturally. Thickly deposited on the surface, resulting in rough, dull skin, that is, keratin thickening. Common in skin diseases and rickets.

Cause

is a hard and smooth keratin thickening of the skin that has been subjected to compression and friction for a long time. It generally does not affect health and labor, and plays a protective role. is caused by long-term mechanical stimulation. If the shoes are too small, too tight or the texture of the shoes is too hard; the foot bones are too prominent, or too thin, it is easy to grind out. In addition, for a certain occupation, there may be defects in specific parts.

an examination

Related inspection

Physical examination of skin diseases Skin elasticity Check skin color

It is a hard and smooth keratin thickening caused by long-term compression and friction of the skin. It is a reflective protective response of the skin to long-term mechanical friction, and generally does not affect health and labor. A reflective protective effect of the skin caused by friction, the stratum corneum thickens, is a limited keratinous plate. Wax yellow horny patch. The realm is unclear and hard to touch. The surface texture is clearly visible, local sweat secretion is reduced, and it is slow. The onset is slower and there are no more symptoms. In severe cases, there is tenderness.

Differential diagnosis

It needs to be differentiated from palmoplantar keratosis. The palmoplantar keratosis is a congenital hyperkeratotic disorder, which often occurs symmetrically. The general keratin thickening of the palmar palsy, the surface is rough, and there is no history of long-term compression friction. It is a hard and smooth keratin thickening caused by long-term compression and friction of the skin. It is a reflective protective response of the skin to long-term mechanical friction, and generally does not affect health and labor. A reflective protective effect of the skin caused by friction, the stratum corneum thickens, is a limited keratinous plate. Wax yellow horny patch. The realm is unclear and hard to touch. The surface texture is clearly visible, local sweat secretion is reduced, and it is slow. The onset is slower and there are no more symptoms. In severe cases, there is tenderness.

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