Palmprint is a kind of dermatoglyphics, which is composed of convex dermatoglyphics and concave dermatoglyphics. Dermatoglyphics mainly exist in palms, soles, fingers and toes, and have individual specificity and lifelong nature. Once the palm print is formed, it will basically not change.
In fact, although the palmprint is basically fixed, some changes have taken place in the subtle skin texture, but this change is not directly related to the internal diseases of the body, but the skin texture is deepened, wrinkled, dry and chapped due to the aging of the skin surface or local moisture and oil changes.
Endocrine changes and skin diseases (such as hand eczema, contact dermatitis, palmoplantar psoriasis) will affect the skin quality of the palm, as well as the effects of allergic substances such as smoking, drugs and diet, climate change, the application of skin care products, long-term sun exposure, environmental pollution, excessive washing or contact with dust.
Extended data:
The formation of human palmprint;
In the early stage of embryonic development, the dermatoglyphics of the palm have gradually formed. Dermatoglyphics began at 10 weeks of pregnancy, and it evolved from an embryonic primitive structure called palm pad. Dermatoglyphics began to appear on the surface of fetal skin in pregnancy 19 weeks, and the pattern of dermatoglyphics will not change after that.
At present, there are three hypotheses to explain the formation of fingerprints: the mechanical hypothesis represented by the folding hypothesis, the neural hypothesis and the fibroblast hypothesis. How dermatoglyphics are formed is still inconclusive, but according to the current research results, genetic, developmental and environmental factors have created individual unique dermatoglyphics.
People's Daily Online-People with these palmprints will get congenital diseases.