What are the signs of growth spurts in teenagers?

After the growth spurt has begun, it generally continues till the age of 15 for girls, whereas in boys, this growth continues till they're 16 or 17. For some boys, the growth spurt can even last till their late teens.

A growth spurt is basically a period of rapid physical growth in teens, in the form of weight and height gain in a short period of time. Some of the signs of these changes are increase in height, weight, change in voice, and also changes in facial appearance among others.

During adolescence, the hormones – estrogen in girls and testosterone in boys – are responsible for the growth spurt in teens. These hormones cause the secretion of human growth hormones that leads to increased mineralisation of bones and increase in height.