Bones, Muscles & Joints
Juvenile Idiopathic Arthritis
Learn about juvenile idiopathic arthritis, a specific kind of arthritis that usually occurs in kids and teens under age 17.
Some teens have a curve in a place where it doesn't really belong: the spine. Here are the straight facts about scoliosis.
Lupus is a disease that affects the immune system. Learn how lupus is treated, signs and symptoms, how to support a friend who has it, and more.
Muscular dystrophy is a disorder that weakens a person's muscles over time. People who have the disease can gradually lose the ability to do everyday tasks.
Osgood-Schlatter disease (OSD) is an overuse injury that can cause knee pain in teens, especially during growth spurts. Learn more.
Repetitive Stress Injuries
Repetitive stress injuries happen when too much stress is placed on a part of the body, causing problems like swelling, pain, muscle strain, and tissue damage.
Female Athlete Triad
Female athlete triad is a combination of three conditions: disordered eating, amenorrhea (loss of a girl's period), and osteoporosis (a weakening of the bones).
Sometimes a bad cut that gets infected can lead to even worse things, like a bone infection called osteomyelitis. The easiest way to protect yourself is to practice good hygiene.
Guillain-Barré syndrome is very rare, and can be frightening because it often causes some type of paralysis. Luckily, most people who get GBS recover.
Scoliosis: Samantha's Story
Between sixth and ninth grades, Samantha received treatment for scoliosis - sometimes at a hospital hundreds of miles away from her home. This is her story about treatment and recovery.
Chronic Fatigue Syndrome
Chronic fatigue syndrome (CFS) is a complicated disease for doctors to diagnose — and even fully understand. Find out more about this often misunderstood condition.
Bursitis, an irritation of the small fluid sacs that provide cushioning in some joints, is often caused by sports-related injuries or repeated use of a particular joint.
Blount disease is a growth disorder that affects the bones of the lower leg, causing them to bow outward. The most obvious sign a person might have Blount disease is bowing of the leg below the knee.
Slipped Capital Femoral Epiphysis (SCFE)
A good, stable connection at your hip joint is what lets you walk, run, make that jump shot, and shake it on the dance floor. But in some teens – particularly those who are obese – the hip joint is weakened by slipped capital femoral epiphysis (SCFE).
Bones are tough stuff - but even tough stuff can break. Find out what happens when a bone fractures.
Strains and Sprains
Sprains and strains are common injuries, especially for people who play hard or are into sports. Find out what they are and how to recuperate from one.
Anterior Cruciate Ligament (ACL) Injuries
ACL injuries - which are common in active and athletic people - happen when excessive pressure is put on the knee joint, resulting in a torn ligament.
Medial Collateral Ligament (MCL) Injuries
MCL injuries - which are common in active and athletic teens - happen when excessive pressure is put on the knee joint, causing a torn ligament.
Knee Injury: Caroline's Story
Caroline loved sports. But when an ongoing knee injury kept her from playing the sports she loved, she discovered new interests. Read her story.
A sprained ankle is a very common injury that happens when the ligaments that support the ankle get overly stretched or torn. Find out how to avoid ankle sprains and what to do if you get one.
It's not always easy to tell if you have a stress fracture, and stress fractures can get worse quickly. This article explains how to prevent and treat them.
What Causes Muscle Twitches?
Find out what the experts have to say.
If the tendon just above your heel becomes swollen or irritated due to overuse, it can lead to a painful condition called Achilles tendonitis. Find out how to treat it - and prevent it.
A hamstring strain happens when one or more of the muscles in the back of the leg gets stretched too far and starts to tear. Find out how to treat hamstring strains in this article for teens.
Your spine, or backbone, normally curves forward gently as it runs up your back. Sometimes, though, someone's back can be rounded too far forward, which is a condition known as kyphosis.
The key to healing meniscus tears is not to get back into play too quickly. Find out what meniscus tears are and how to treat them.
The most obvious symptom of plantar fasciitis is a sharp pain on the bottom of the foot, near the heel. Find out how to tell if it's plantar fascitiis and what you can do in this article for teens.
A groin strain is a tear of one or more of the muscles that help you squeeze your legs together. Find out what to do for groin strains - and why it's important not to go back to sports or other activities too quickly.
Most hip pointer injuries can be easily treated and heal in their own time. Find out what to do in this article for teens.
What to Expect When Your Cast Comes Off
You probably can't wait to get back to your normal activities, but it takes a while for a limb that's been in a cast to finish healing. Here's what to expect.
A clavicle fracture, also known as a broken collarbone, is one of the most common types of broken bones. Find out how they can happen - and how to treat and avoid them.
This growth-related injury is more common in teens who play sports that require a lot of running or jumping. Find out why it happens - and what you can do to avoid and treat it.
Quadriceps contusions are common in sports that have a lot of direct contact or a chance of collisions or wipeouts. Find out what to do if you get one - and how to avoid them.
Casts and Splints
This article for teens has tips on taking care of a cast so it keeps working as it should.
Costochondritis is a fairly common cause of chest pain. It's not serious, but it can be scary. Find out what it is, and what to do if you think you have it.
Scoliosis: Personal Stories (Video)
In this video, two girls who were treated for scoliosis talk about their experiences.
Fibromyalgia is a long-term condition that causes pain in a person's muscles, joints, and other soft tissues. Find out how doctors tell if a person has fibromyalgia and what can be done to treat it.
Spinal Muscular Atrophy: Steven's Story (Video)
Steven was diagnosed with SMA when he was 3. Here's a look at his life today and why he says, "When someone tells you you can't do something, don't be afraid to try something new."
Medial epicondylitis is an overuse injury that affects the tendons in the elbow. It's rarely serious, but it does need rest and treatment or it will get worse. Find out what to do.
Proximal Biceps Tendonitis
In teens, biceps tendonitis is usually an overuse injury that causes tendons in the upper arm to be swollen or irritated. Most cases heal on their own if you follow a few guidelines from your doctor.