It is defined as the lack of pubertal development by the age of 13 in girls and 14 in boys.
An absence of an increase in a testicular column that is less than 4 mL at 14 years in a boy or absence of any breast development at 13 years in a girl.
Causes of delayed puberty:
It is caused by a long-term illness, such as cystic fibrosis, diabetes, or kidney disease.
Malnutrition is possibly from an eating disorder or a condition such as cystic fibrosis or coeliac disease.
It occurs as a problem with the ovaries, testes, thyroid gland, or pituitary gland.
It is a disorder of sexual development, such as androgen insensitivity syndrome.
Genetic conditions occur such as Kallman syndrome and Klinefelter syndrome.