The age of children is from a few years old, and the age of children is from a few years old

The age of a child is broadly defined and should be considered a child from birth until the age of 18.

According to the characteristics of children's growth and development at different ages, the neonatal stage refers to the period from umbilical cord ligation to 28 days of birth; Infancy refers to before the age of one; Early childhood refers to between 1-3 years old, preschool refers to 6-7 years old before going to school, after the age of three are called pre-school age, school age refers to 6-7 years old to before puberty, adolescence is generally about 10 years old to puberty sexual maturity, generally to about 18 years old.

The age of pediatric visits is 0-14 years, including newborns 0-28 days, infants up to 1 year old, toddlers 1 3 years old, and children 3 to 14 years old. The specific choice of department should also be decided according to the child's disease, and if the pediatric department has less experience in diagnosing this disease than other specialties, it can also be transferred to other departments for diagnosis and treatment. Depending on your condition, you should choose a paediatrician**, and if the paediatric department is not available, you will be advised to transfer to another department.

In children's literature, children are divided into five age stages: infancy (1 3 years old), early childhood (3 6 years old), childhood (6 12 years old), adolescence (12 to 15 years old), and late adolescence (15 to 18 years old).

According to the anatomical and physiological characteristics of each age group, childhood is further divided into:

First, perinatal period.

The fetus is 28 weeks old to one week after birth.

Second, the neonatal period, from delivery to 28 days after birth.

3. Infancy or infancy, from 28 days after birth to one year old.

Fourth, early childhood, one to three years old.

Fifth, the preschool period is from the end of early childhood to the beginning of primary school, that is, from three to six or seven years old.

Sixth, the school age, from the sixth elementary school to the beginning of puberty, generally six or seven years old to twelve years old.

VII. Adolescence, from secondary sexual characteristics.

Appears to the basic maturity of reproductive function. The general range is between the ages of 10 and 20, and girls are generally two years ahead of boys. Depending on the climate and ethnicity of the region, in most parts of China, girls are 10 to 12 years old, and boys are 12 to 13 years old, and they are completed at the age of 18 to 20.

0-12 years old. Infancy: 1 to 12 months of birth. Among them, the umbilical cord clamping to 28 days after birth is called the neonatal period. 6 months 12 months old babies are called older babies.

Early childhood: 1-3 years old.

Preschool: After the age of 3 to before entering elementary school at the age of 6 or 7.

School age: 6 years old 12 years old.

Adolescence Adolescence: 13 years old 18 years old.

The International Convention on the Rights of the Child defines a child as a person under the age of 18.

At the 23rd meeting of the Standing Committee of the Seventh National People's Congress on 29 December 1991, China decided to ratify China's accession to the Convention on the Rights of the Child.

In childhood, there are the following subdivisions.

1. 0 years old is an infant.

2. Children aged 1-6 years old.

3. Children between the ages of 7 and 12 (overlapping with adolescence can also be called children or children).

Fourth, 13-17 years old is a teenager (can also be called a teenager).

It can be seen that anyone under the age of 18 can be called a child, and a 13-year-old can also celebrate Children's Day.

Extended information: 18-65 years old for young people.

66-79 years old is middle-aged.

Those over the age of 80 are considered old age (also known as old age and twilight years).

According to the UN's official website, the UN General Assembly defines "youth" as those between the ages of 15 and 24 (inclusive). Therefore, according to the above definition, children are those who are under the age of 14 years. However, it is worth noting that Article 1 of the United Nations Convention on the Rights of the Child defines a "child" as a person who is not older than 18 years of age.

The discrepancy in definitions between the two was an intentional arrangement, as the United Nations hoped that the Convention on the Rights of the Child would provide protection and protection of the rights of as many children as possible in the same age group, and because there was no United Nations Convention on the Rights of Youth at that time that was similar to the Convention on the Rights of the Child.

The age division of children and adolescents is as follows:In children's literature, children are divided into five age stages: infancy (1 3 years old), early childhood (3 6 years old), childhood (6 12 years old), adolescence (12 to 15 years old), and late adolescence (15 to 18 years old).

In general, children are born from birth to seventeen or eighteen years old, and according to the characteristics of psychological development, children's psychological development is divided into: infant period is from birth to 1 year old, infancy period is 1 to 3 years old, preschool or early childhood period is 3 to 6 years old, early school age is 6 to 12 years old, middle school age or adolescence 12 to 15 years old, late school age or young adult period 15 to 18 years old.

Childhood is the most important stage of human development, the physiological and psychopathological characteristics of each age stage are different from those of adults at different ages, the younger the age, the greater the difference, the growth and development of children, need to draw nutrients from food to supplement the growth of tissues, children's immune system development is not yet mature.

The age division of children and adolescents is as follows:In children's literature, children are divided into five stages of regression: 1-3 years old in infancy, 3-6 years old in early childhood, 6-12 years old in childhood, 12-15 years old in adolescence, and 15-18 years old in late adolescence.

Under normal circumstances, children are classified from birth to seventeen or eighteen years old, and according to the characteristics of the development of mental blindness and hunger, children's psychological development is divided into: infant period is from birth to 1 year old, infancy period is 1 to 3 years old, preschool or early childhood concealment is 3 to 6 years old, early school age is 6 to 12 years old, middle school age or adolescence 12 to 15 years old, late school age or young adult 15 to 18 years old.

Childhood is the most important stage of human development, the physiological and psychopathological characteristics of each age stage are different from those of adults at different ages, the younger the age, the greater the difference, the growth and development of children, need to draw nutrients from food to supplement the growth of tissues, children's immune system development is not yet mature.

3 years old to 12 years old, of which 3 to 6 years old are preschool children, 7 to 12 years old are school-age children; This is a stern statement! From one year old to three years old, it is infancy!

What I said upstairs is not right, it should be 3 to 12 years old, of which Sanchun is a preschool child from 6 years old, and 7 to 12 years old is a school-age child; This is strictly speaking!

From one year old to three years old, all pants are excited to belong to the infant stage!

0-12 years old. Infancy: 1 to 12 months of birth. Among them, the 28 days after the birth of the umbilical cord is called the neonatal period. 6 months 12 months old babies are called older babies.

Early childhood: 1-3 years old.

The early stage of school-age change: after the age of 3 to before the age of 6 or 7 to enter primary school.

School age: 6 years old 12 years old.

First sentence in juvenile Adolescence: 13 years old 18 years old.

Children are supposed to be children from birth until the age of 18 in the broad sense of the word.

According to the characteristics of children's growth and development at different ages, they are divided into several stages, which are explained as follows:

Neonatal stage: refers to the period from the ligation of the umbilical cord to the first 28 days of birth.

Infancy: Refers to before the age of 1 year.

Early childhood: between 1 and 3 years old.

Preschool: refers to the preschool before the age of 6-7 years old, and after the age of 3. Seep celery.

School age: refers to 6-7 years of age to before puberty.

Puberty: Generally from about 10 years old to puberty, sexual maturity is generally around 18 years old.

Child Development Standards

1. Weight standard, 3-12 months weight (kg) = (month age + 9) 2, 1-6 years old weight (kg) = age 2 + 8, 7-12 years old weight (kg) = (age 7-5) 2.

2. Height standard, average height at birth 50cm, 75cm at 1 year old, 87cm at 2 years old, height 2-12 years old = age 7-77.

3. The standard head circumference is 34cm at birth, 46cm at the age of 1, 48cm at the age of 2, 50cm at the age of 5, and 54-58cm at the age of 15.

4. The standard of chest circumference, 32cm at birth, 2cm smaller than the head circumference, and the development of chest circumference and head circumference in the future is equal, and the waist circumference standard is similar to the chest circumference.

5. Tooth development standards, a total of 20 baby teeth, the early and late individual differences in teething, the earliest 4 months eruption, the late 10-12 months eruption, the average 7-8 months teething, the number of baby teeth after 2 years old = month age - (4-6), 2 and a half years old baby teeth out, after 6 years old baby teeth began to fall out, and then gradually permanent teeth appeared, a total of 32 permanent teeth.

The above content reference: There are doctors - children refer to what age to what age.

Children are generally from 3 to 12 years old, and are called newborns from the time they are born to 1 year old, and children between 1 and 3 years old are called toddlers. It can also be distinguished according to the stage of education, generally in kindergarten is called toddler, in the small wheel tease school period is children, in middle school children are called teenagers, in college years is young people. Wax type in the child before the age of 6 need to go to the regular hospital for vaccination, can promote the body to produce some antibodies, to achieve the purpose of preventing a certain disease, vaccination needs to pay attention, if you find that the child has a fever or cold and other symptoms, to wait until the body is completely ** before vaccination.

Avoid missing vaccinations, otherwise it will affect your future education and education.