Low Back Pain in Children and Teens: Causes, Warning Signs, and Treatment

Low back pain in children and teenagers can be worrying for families. Although most back pain in young people is caused by minor muscle strain or overuse and improves with simple home care, it can sometimes signal a more serious problem that needs medical attention.

This guide explains what parents and caregivers need to know about low back pain (sometimes called lumbago) in children and teens, including common causes, warning signs, diagnosis, treatment options, and ways to help prevent future problems.

What Do Doctors Mean by “Low Back Pain”?

The term low back pain refers to discomfort felt in the area between the bottom of the ribs and the top of the hips, often centered around the spine or slightly to one side. Children may describe it as:

• A dull, aching pain in the lower back
• Sharp pain with certain movements, such as bending or twisting
• Stiffness, especially after sitting or standing for a long time
• Pain that worsens with activity or improves with rest

Back pain can appear suddenly after an injury, or it can develop slowly over days or weeks. In most school-age children, it is related to physical activity, posture, or growth.

How Common Is Back Pain in Young People?

Back pain used to be considered unusual in children, but recent research shows it is becoming more frequently reported in school-age kids and adolescents. This may be related to:

• Increased participation in organized sports and intensive training
• More time spent sitting, especially using computers, tablets, and phones
• Carrying heavy backpacks or bags
• Less overall physical conditioning or core strength

Even so, most back pain in children is still mild and short-lived. Persistent pain, pain in very young children, or pain accompanied by other symptoms deserves a closer look.

Common Causes of Low Back Pain in Children and Teens

Many different conditions can lead to low back pain in a young person. Some are simple and improve quickly; others are less common but more serious. Below is an overview of frequent causes, starting with the most common.

1. Muscle Strain and Overuse

Muscle strain is the most frequent cause of low back pain in older children and teens. It often results from:

• Lifting something heavy with poor body mechanics
• Sudden increase in sports intensity or duration
• Repetitive bending, twisting, or jumping
• Minor falls or collisions during play

Children with muscle strain usually have:

• Pain that gets worse with movement and better with rest
• Soreness when the muscles are pressed
• No fever, numbness, or changes in bowel or bladder function

2. Poor Posture and Weak Core Muscles

Spending long periods slouched over screens or sitting in soft chairs can strain the muscles and ligaments that support the spine. Teenagers with poor posture may develop:

• Achy pain between the lower ribs and hips, especially after sitting
• Tight hamstrings and hip flexors
• Weak abdominal and back muscles

Improving posture, strengthening the core, and taking regular movement breaks often significantly reduce this type of pain.

3. Backpacks and School Loads

Heavy or poorly worn backpacks can contribute to low back pain. Guidelines from pediatric and orthopedic experts suggest that a backpack should generally weigh no more than about 10–15% of a child’s body weight. Problems are more likely when kids:

• Carry the pack on one shoulder only
• Wear the straps too loose so it hangs low
• Pack unnecessary books or devices

4. Stress Fractures of the Spine (Spondylolysis)

Spondylolysis is a stress fracture in a small part of a vertebra, most commonly in the lower spine. It often occurs in young athletes who frequently bend backward or twist, such as gymnasts, divers, football linemen, or dancers.

Typical features include:

• Low back pain that worsens with arching the back or sports
• Pain that improves with rest but returns with activity
• Sometimes tight hamstrings or stiffness

Doctors may order X-rays or more advanced imaging to confirm this diagnosis.

5. Spinal Curvature: Scoliosis and Kyphosis

Scoliosis is a sideways curve of the spine, while kyphosis refers to an exaggerated forward rounding, sometimes called “roundback.” Many children with these conditions have no pain, but some adolescents do report low back or mid-back discomfort.

Clues can include:

• One shoulder or hip higher than the other
• Rib cage that looks more prominent on one side when bending forward
• Noticeable rounded upper back

These conditions are usually picked up during routine physical exams or school screenings.

6. Disc Herniation and Nerve Compression

Disc herniation is less common in children than in adults but can still occur. It happens when the soft inner part of an intervertebral disc pushes out through its outer layer and irritates nearby nerves.

Symptoms may include:

• Low back pain plus pain that radiates into the buttock or leg (sciatica)
• Numbness, tingling, or weakness in one leg
• Pain that worsens with coughing, sneezing, or sitting

7. Infections, Tumors, and Other Serious Causes (Less Common)

In a small number of children, low back pain may be caused by infection of the spine or discs, inflammatory conditions, or tumors involving the spine or spinal cord. These causes are rare but important to recognize early. They often produce additional symptoms such as:

• Fever, chills, or feeling unwell
• Unexplained weight loss or poor appetite
• Pain that wakes the child at night
• Weakness, numbness, or difficulty walking

Back pain in very young children (under 4–5 years old) is more likely to have a serious cause and should be evaluated promptly.

Warning Signs: When Is Low Back Pain an Emergency?

Most back pain can safely be evaluated during a regular clinic visit. However, urgent or emergency care is needed if your child has back pain along with any of the following:

• Loss of bladder or bowel control, or trouble starting or stopping urination
• Sudden weakness in the legs or difficulty walking
• Severe pain after a major fall, sports collision, or car crash
• High fever, chills, or looking very ill
• Pain that is constant, worsening, and wakes your child from sleep

These symptoms can indicate pressure on the spinal cord, serious infection, or another medical emergency.

When to Call Your Child’s Doctor

Arrange a medical visit if your child:

• Has back pain lasting more than several days, even if mild
• Complains of back pain that limits sports, school, or daily activities
• Develops back pain without any clear cause or injury
• Is younger than 10 years old and reporting new back pain
• Has back pain together with unexplained fever, weight loss, or fatigue

How Doctors Evaluate Low Back Pain in Children

Because serious causes are more common in children than in adults, pediatric guidelines recommend a careful evaluation when a child has persistent or significant back pain.

Medical History

The doctor will ask questions about:

• When the pain began and what your child was doing at the time
• Where the pain is located and whether it travels to the legs
• What activities make it better or worse
• Past injuries, sports participation, and daily physical activity
• Other health issues, such as infections, weight loss, or previous bone problems

Physical Examination

The exam may include:

• Checking posture and spinal alignment from the front, side, and back
• Feeling the muscles and bones around the spine for tenderness
• Asking your child to bend forward, backward, and sideways
• Testing strength, reflexes, and sensation in the legs
• Looking for tight hamstrings or hip muscles

Tests and Imaging

Not every child with back pain needs imaging or blood tests. Doctors may order tests when pain is severe, persistent, or accompanied by red flags. Possible tests include:

• X-rays to look at spinal bones, alignment, or possible fractures
• MRI to assess discs, spinal cord, nerves, or soft tissues
• CT scan or bone scan in selected cases, especially for stress fractures
• Blood tests if infection, inflammation, or other systemic illness is suspected

Treatment Options for Low Back Pain in Children and Teens

Treatment depends on the cause, severity, and how long the pain has been present. Most children with minor strains or posture-related pain improve with simple measures at home, sometimes along with guidance from their pediatrician or a physical therapist.

Self-Care and Home Management

For mild to moderate back pain from strain or overuse, doctors often recommend:

• Brief rest from heavy lifting or high-impact sports (usually 1–3 days)
• Ice packs in the first 24–48 hours to reduce soreness, followed by heat to relax muscles
• Gentle movement and stretching instead of prolonged bed rest
• Pain relievers such as acetaminophen or ibuprofen, if advised by your child’s doctor

Extended bed rest is not usually recommended because it can weaken muscles and slow recovery.

Physical Therapy and Exercise

Physical therapy is a key part of treatment for many types of pediatric low back pain. A therapist can:

• Teach exercises to strengthen abdominal, back, and hip muscles
• Improve hamstring and hip flexibility
• Work on body mechanics for lifting, jumping, and landing
• Address posture and alignment issues

Physical therapy is especially helpful for:

• Recurrent or chronic low back pain
• Stress fractures (after the initial healing phase)
• Posture-related pain and deconditioning

Activity Modification and Sports

Young athletes with back pain may need to reduce or temporarily stop the activities that trigger symptoms. A gradual, supervised return to sports helps prevent re-injury. This often involves:

• Limiting high-impact or repetitive extension sports for a period
• Cross-training with lower-impact workouts, such as swimming or cycling
• Reassessing training volume, technique, and equipment

Bracing, Injections, and Surgery

More intensive treatments are usually reserved for specific conditions:

• Bracing may be recommended for certain spinal curves or some stress fractures.
• Injections are rarely used in children and only in selected cases under specialist care.
• Surgery is uncommon and generally considered only for severe structural problems, progressive deformities, unstable fractures, tumors, or nerve compression that does not improve with other treatments.

Helping Your Child Prevent Future Back Pain

While not all back pain can be prevented, healthy habits can reduce the risk and support long-term spine health:

• Encourage regular physical activity that includes aerobic exercise, strength training, and stretching.
• Promote good posture when sitting, standing, and using digital devices.
• Check backpack weight and make sure straps are adjusted snugly on both shoulders.
• Support strong core muscles with age-appropriate exercises such as planks, bridges, or supervised yoga.
• Ensure proper sports technique and adequate rest days, especially during growth spurts.

Frequently Asked Questions (FAQs)