Back Pain in Children: Causes, Symptoms & When to Call the Doctor

Many parents are surprised when a child or teen starts complaining of an achy back. Although back pain is more common in adults, it can affect kids too. In most cases it is related to muscles, posture, or minor injuries and improves with simple care at home. Sometimes, however, back pain can be a sign of a more serious problem that needs prompt medical attention.

This guide explains the most frequent reasons for back pain in children, how to help your child feel better, and the warning signs that mean it is time to call the doctor.

How Common Is Back Pain in Kids?

Back pain becomes more frequent as children grow into the later school years and adolescence. Studies show that many teens will experience at least one episode of back pain, often linked to sports, growth, or posture habits.

Fortunately, most of these episodes:

• Are short-lived (days to a few weeks)
• Respond to rest, gentle movement, and over-the-counter pain relief when appropriate
• Do not involve long-term damage to the spine

Common Causes of Back Pain in Children

Back pain in children can come from muscles, ligaments, bones, joints, or—less often—the nerves or internal organs. Below are some of the more frequent causes.

1. Muscle Strain and Overuse

The most common reason children and teens complain of back pain is a simple muscle strain or overuse injury.

• Typical triggers: sports practices or games, dance, gymnastics, lifting or carrying something heavy, sudden increase in training, vigorous play, or a minor fall
• What it feels like: soreness or tightness in the muscles, usually in the lower back; pain may worsen with certain movements such as bending or twisting
• Recovery: usually improves over several days with rest, ice or heat, and gentle stretching

2. Poor Posture and Weak Core Muscles

Long periods of sitting, especially when slouching over a phone, tablet, or laptop, can strain the back muscles and ligaments. Weak abdominal muscles and tight hamstrings may also contribute to pain.^[10]

• Sitting in a slumped position for homework or screen time
• Leaning forward on soft couches without support
• Standing with exaggerated sway in the lower back

These habits place extra stress on the spine. Strengthening the core and building healthy posture can significantly reduce this type of discomfort.^[10]

3. Heavy or Poorly Fitted Backpacks

Carrying a backpack that is too heavy or worn on one shoulder can cause muscle strain and back or shoulder pain.

• Risk factors: backpack weighing more than about 10–15% of the child’s body weight, thin straps, or one-shoulder carrying
• Symptoms: aching in the shoulders, neck, or back after walking to and from school

4. Sports-Related Injuries

Some sports put repeated stress on the spine, especially those involving frequent bending backward, twisting, or high-impact landings. Gymnastics, diving, football, wrestling, and dance are examples.^[10]

In addition to simple muscle strain, more specific conditions may occur:

• Stress fracture in a vertebra (spondylolysis): a tiny crack in part of a spinal bone, often from repetitive extension of the lower back; usually causes low back pain that worsens with activity and may improve with rest
• Slipped vertebra (spondylolisthesis): in some cases, the stress fracture allows one vertebra to shift slightly forward on another, which can cause more persistent pain or leg symptoms
• Disc herniation: rarely, a spine disc can bulge or rupture and press on nearby nerves, leading to leg pain, tingling, or weakness in addition to back pain

5. Spinal Curvature Conditions

Some children develop abnormal curvature in the spine that may or may not cause pain:

• Scoliosis: curvature to the side that may become more noticeable during growth spurts; mild scoliosis often doesn’t hurt, but more severe curves can be uncomfortable, especially in adolescence
• Kyphosis (rounded back): an exaggerated forward curve of the upper back that can be due to structural changes in the vertebrae (such as Scheuermann’s disease) and may cause mid-back pain

These conditions are usually monitored over time and may be treated with exercises, bracing, or, rarely, surgery depending on severity.

6. Less Common but Serious Causes

Although rare, some serious problems can present with back pain in children:

• Infections: infection in the bones (vertebrae) or discs can cause persistent pain, fever, and general illness
• Tumors: benign or malignant tumors in or near the spine may cause constant or night pain, sometimes with weight loss or neurologic symptoms
• Inflammatory or rheumatologic disease: conditions such as juvenile spondyloarthritis can cause chronic back stiffness and pain that may be worse in the morning
• Kidney or abdominal problems: occasionally, pain felt in the back is actually coming from the kidneys or another organ; this is more likely if pain is higher in the back or off to one side, or if there are urinary symptoms or fever

Typical Back Pain vs. Concerning Symptoms

Recognizing the difference between mild, self-limited pain and symptoms that need urgent evaluation is crucial.

When to Call the Doctor

Experts recommend that children with back pain be seen by a health professional if any of the following are present:

• Pain lasts longer than several days or keeps coming back
• Back pain interferes with sleep, school, sports, or normal activities
• There is fever, chills, or unexplained weight loss
• There is weakness, numbness, tingling, or pain radiating down one or both legs
• There is difficulty walking, frequent tripping, or a noticeable change in gait
• The child is under 4–5 years old and has significant back pain
• There is a recent major fall, crash, or other serious injury
• There are changes in bladder or bowel control

These signs do not always mean something serious is wrong, but they do warrant timely evaluation.

How Doctors Evaluate Back Pain in Children

A health care provider will begin with a careful history and physical exam. Depending on findings, they may recommend tests or imaging.

Questions the Doctor May Ask

• When did the pain start? Was there an injury?
• Where exactly does it hurt? Does the pain spread to the legs or buttocks?
• What makes the pain better or worse (rest, activity, certain movements)?
• Is the pain worse at night or first thing in the morning?
• Have there been fevers, weight loss, or other health changes?
• Is there any weakness, numbness, or trouble with coordination?
• How is the pain affecting school, sports, or sleep?

Physical Examination

The exam typically includes:

• Inspection of posture and spinal alignment from the front, side, and back
• Range-of-motion testing (bending forward, backward, and side to side)
• Palpation for tender spots in muscles or bones
• Neurologic checks for strength, reflexes, and sensation in the legs
• Special tests for scoliosis, leg-length differences, or hip problems

Imaging and Tests

Not every child with back pain needs X-rays or scans. Imaging is more likely if pain is severe, persistent, or associated with red-flag symptoms.

• X-rays: show bone alignment, fractures, or some curvature problems
• MRI: provides detailed images of discs, nerves, and soft tissues; useful for suspected disc herniation, tumors, or infection
• Blood tests: may be ordered if an infection, inflammatory disease, or cancer is a concern

Home Care for Mild Back Pain

For mild, recent back pain in a healthy child without red-flag symptoms, home measures can be very effective.

Rest, But Not Complete Inactivity

• Encourage the child to avoid activities that clearly worsen the pain, such as heavy lifting or high-impact sports.
• Short periods of relative rest (1–3 days) are usually enough; complete bed rest for long periods is not recommended because it can weaken muscles and slow recovery.
• Gentle walking and light daily activities, as tolerated, can help maintain flexibility.

Ice and Heat

• Use cold packs in the first 1–2 days after a new injury to reduce soreness and swelling (10–15 minutes at a time, with a cloth barrier on the skin).
• After the initial period, many children find heat (warm packs or baths) soothing for muscle tightness.

Over-the-Counter Pain Relief

• Medications such as acetaminophen or ibuprofen may be helpful when used at the correct dose for the child’s age and weight.
• Always follow dosing instructions and talk with a pediatrician if you are unsure about what is safe.

Gentle Stretching and Movement

Once the worst pain has eased, slow stretching can prevent stiffness and promote healing.^[10]

• Hamstring stretches (back of the thigh)
• Pelvic tilts to gently move the lower back
• Core-strengthening activities recommended by a health professional

If pain increases significantly with these movements, stop and consult a doctor or physical therapist.

Helping Kids Build a Healthy Back

Small daily habits can lower the risk of future back pain and support a strong, flexible spine.

Backpack Safety Tips

• Choose a backpack with wide, padded shoulder straps and a waist or chest strap.
• Encourage your child to wear both straps so the weight is evenly distributed.
• Keep the load light—ideally no more than about 10–15% of your child’s body weight.
• Place heavier items closest to the back and use all compartments to distribute weight.

Posture and Screen Time

• Set up a child-sized workspace with a chair that supports the lower back and allows feet to touch the floor or a footrest.
• Encourage breaks from sitting every 30–60 minutes to stand, stretch, or walk around.
• Remind children to bring screens up to eye level rather than bending their necks down.

Exercise and Core Strength

• Encourage a mix of activities: walking, cycling, swimming, and age-appropriate sports.
• Include exercises that strengthen the abdominal and back muscles, which support the spine.^[10]
• Help your child warm up and cool down before and after sports or intense play.

Healthy Weight and Nutrition

• Maintaining a healthy weight reduces extra strain on the back and joints.^[10]
• Provide balanced meals with adequate calcium and vitamin D to support strong bones.
• Encourage hydration; water is usually the best choice for daily drinking.

Working With Specialists

If back pain persists or if a specific spinal condition is diagnosed, your child’s primary care doctor may refer you to a specialist.

• Pediatric orthopedic surgeon or spine specialist: focuses on bone and joint problems in children
• Physical therapist: designs individualized exercise programs to improve strength, flexibility, and posture
• Pediatric rheumatologist: evaluates inflammatory or autoimmune causes of pain and stiffness
• Pain or rehabilitation specialist: helps manage chronic pain and support return to activities

Frequently Asked Questions (FAQs)