Growth spurts in young children happen when the bones and muscles go through rapid growth, and growth spurts in teenagers happen due to hormonal changes during puberty. There is no set time that a child will go through a... More »

Sex steroids and growth hormones trigger the growth spurt of puberty. For males, the primary steroid hormone responsible is testosterone; for females, it is estradiol. More »

Some typical signs of a baby's growth spurt include longer sleep sessions and naps and an eager appetite, which usually prompts more feedings during the day and through the night. Excessive fussiness is also a sign of a ... More »

A teenage male growth spurt is a period during puberty in which a teenage boy's bones and muscles grow at a steady, quick pace, according to KidsHealth. Growth spurts typically occur between ages 12 and 15 and are one of... More »

Sex steroids and growth hormones trigger the growth spurt of puberty. For males, the primary steroid hormone responsible is testosterone; for females, it is estradiol. More »

According to the BBC, boys grow taller than girls due to the growth spurt delay boys experience during puberty, adding two more years of childhood growth. Additionally, boys grow at a faster rate during this growth spurt... More »

Some of the signs of puberty in boys include growth spurts, the appearance of facial hair, broader shoulders and body odor, according to About.com. Other signs include pimples, hair growth in new areas, deepening of the ... More »