“Calluses” in the wrong place

One day, I suddenly found a “callus” on the finger joints, not on the palms of the hands and feet, nor on the fingertips, but on the back. It was quiet without pain and itching, but it made some people think more and more wrong, so came to the dermatology department for answers! At first glance, the doctor was really not calluses (callos), scientific name knuckle pads. Although the name is unfamiliar, isn’t it quite graphic? Human fingers have three phalanges, so each finger has two interphalangeal joints, called the proximal interphalangeal joint and the distal interphalangeal joint. This phalanx pad is best found in the proximal interphalangeal joints, a few occur in the distal or toes (interphalangeal joints), and extreme restlessness can also be seen in the knee. Disturbance anyway: The above text finds an obvious fallacy, “A human finger has three phalanges”? Leaving aside congenital malformations and acquired traumatic disabilities, at least our most important thumb is dissatisfied, thick and strong with only two joints, so there is only one interphalangeal joint. The next description will still use “general” and “majority” to reflect objectively! Closer to home. This knuckle pad usually shows flat or raised horny hyperplasia, which is harder to touch than normal skin, a little hairy and rough, the color is close to normal skin color, and some are grayish brown or dark reddish brown. Because there is no obvious feeling, many people can’t remember when they started growing. It is clinically necessary to distinguish between calluses and artificial dermatitis. Calluses (calloss) are clearly caused by mechanical friction, which is a physical skin disease. It is more common in palm and plantar friction parts. It is hypertrophic but has normal skin lines. It is related to occupational labor and plays a local protective role. Artificial dermatitis is “made” by yourself, so that you have more peculiar patterns and scars on your body, which is a mental related skin disease. It is difficult for ordinary people to understand, “the body is skinned, the parent is affected”, how can he be so cruel to himself! The cause of the knuckle pads is not clear, some are related to heredity, and may have a family history. Its special site helps to distinguish it from other skin diseases. The pathological manifestations are horny hyperplasia, hypertrophy of spinous layer and thickening of dermal collagen. It’s so ugly, can you cut it? As the so-called “hands up and down, clean and neat”! Slowly, this site cannot be easily cut, otherwise the scars after surgery will be higher and more ugly than the phalanx pads. If it is not good, it will affect the function. Whether it is the knee or the inter-finger joints, the joints are difficult to stay still for a few months, which affects normal skin repair and can only be filled quickly by granulation tissue and new blood vessels. This quick defective product does not have normal skin structure, including appendages such as hair follicle sweat glands We call it scar healing. In the treatment, thiosalam or compound benzoic acid ointment can be applied outside during the day, and retinoid acid cream can be applied externally at night to soften and exfoliate keratin. Fujining plaster can also be tried to increase skin hydration through the package, which is conducive to drug penetration and at the same time plays a protective role. Moisturizing and activating blood circulation such as urea cream and Xiluotuo have improved some people. Finally, we must emphasize daily skin care. The hand is our second face, don’t put a lot of cosmetics on the face, but the hand is not waiting to be seen. Avoid local irritation, including excessive cleaning and some contact chemicals. Use simple moisturizers. Even if it’s not a slim hand, at least it can’t expose the age like old bark! Scientific skin care, let us work hard together! The corns of calluses and calluses. Are you sure you know more about science? Please pay attention to “Skin Care in Xitang”