Body abnormality

Body abnormality refers to a person whose length is significantly different from that of a normal person of the same race, age, and gender. Under normal circumstances, human growth and development have certain rules. Children and adolescents are in the period of growth and development. The percentage of growth in infants and young children is relatively high. At the age of 13, 14 years, there is a rapid increase, and physical changes are small in adulthood. Factors affecting body development include the effects of genetic and physical factors on growth and development; nutritional deficiencies and metabolic disorders such as iodine deficiency (endemic minor disease), vitamin D deficiency (rickets), chronic diseases caused by systemic diseases, etc .; abnormal endocrine functions such as Growth hormone (GH), thyroid hormone, insulin and sex hormone and other abnormal growth and development disorders are common. The nervous system, especially the hypothalamus, often causes growth and development disorders.