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Why do some people have oily skin, while others have dry skin like fish scales?
The differences have a lot to do with the sebaceous glands, which are one of the channels through which the body metabolizes oil, which can moisturize skin to prevent dry skin.
The sebaceous glands of our skin are mainly distributed in the scalp, the T zone formed by the forehead and nose, the chin, back and chest. If the secretion of sebaceous glands is normal and the secretion of sebum is moderate, the skin will be smooth and soft, at same time to prevent the evaporation of water in skin.
Some people’s sebaceous glands secrete strong sebum and form oily skin.
However, in patients with ichthyosis, because of the accumulation of fish scales, the sebaceous glands cannot secrete oil normally, causing the skin to become dry and itchy.
After the epidermal cells die, the skin lacks nutrients and causes dryness, cracking and even oxidation. Between the cracked scales, dead cells will continue to be produced.
That's why the epidermis of patients with ichthyosis has many different degrees of scales and Lines.
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