COVID-19 usually is milder in kids than in adults, though some children have gotten pretty sick from it. Many parents wonder what to do if their child gets sick. Here's what you need to know.

What Is a Growth Plate? Growth plates are the areas of new bone growth in children and teens. They're made up of cartilage, a rubbery, flexible material (the nose, for instance, is made of cartilage).

How Does Precocious Puberty Affect Kids? When puberty ends, growth in height stops. Because their skeletons mature and bone growth stops at an earlier age than normal, kids with precocious puberty ...

How Does the Brain Work? And How Does the Nervous System Work? How do you remember the way to your friend's house? Why do your eyes blink without you ever thinking about it? Where do dreams come from?

What Is Spondyloepiphyseal Dysplasia Congenita? Spondyloepiphyseal dysplasia congenita (SEDc) is a type of skeletal dysplasia. Skeletal dysplasias are conditions that cause problems with how cartilage ...

Diabetes is a disease that affects how the body uses glucose, a sugar that is the body's main source of fuel. Your body needs glucose to keep running.

Is it Safe to Use Household Chemicals During Pregnancy? Some household cleaners and chemicals are safe to use during pregnancy while others are not. Chemicals like ammonia and chlorine might cause ...

How much do you know about your muscles? Find out by taking this quiz!

A hydrocele (HI-dro-seel) is a pouch of fluid around the testicle inside the scrotum. Hydroceles are common in newborns, especially in premature babies. Older boys and men can get them too.

Why are my breasts different sizes? Is there anything I can do about it? It is normal to have different sized breasts. If you have just started developing breasts, one breast may grow more quickly ...

Many things can lead to hearing loss, but often, no cause is found. Hearing loss is more likely if a child: Some hearing problems come on gradually after birth or show up later in life. If you are ...

It’s normal for people to masturbate (touch or rub their own genitals because they like the way it feels). Some people do it to relieve stress or tension. It’s nothing to be ashamed of or embarrassed ...