Growing Pains in Children: What They Are and How to Help

If your child has been waking up in the night crying that their legs hurt — and there's no swelling, no injury, and everything looks completely fine in the morning — you've probably already heard the phrase "growing pains." It's one of the most common concerns parents bring to our team at Little Roots Pediatric Chiropractic, and also one of the most misunderstood. Here's what growing pains actually are, why they tend to happen at night, what really causes them, and what genuinely helps when a child is uncomfortable.

What Are Growing Pains, Really?

Growing pains are real. Despite what some older medical sources suggested, this is not a made-up condition or a label for vague complaints your child can't explain — the discomfort they're describing is genuine.

Growing pains are episodes of aching or cramping pain, almost always in the legs, that occur in children typically between ages 3 and 12. They follow a very recognizable pattern:

• Pain in both legs (not one side only)
• Located in the muscles — usually the calves, the front of the thighs, or behind the knees
• Worst in the late afternoon or evening, often waking a child from sleep
• Gone by morning, with no limping, swelling, or tenderness during the day

That last point is important. If your child is limping during the day, if there's visible swelling or redness around a joint, if the pain is localized to a joint rather than the muscle belly, or if symptoms limit activity — that's a different picture that warrants evaluation. Classic growing pains are muscle-centered, evening-weighted, and absent during daytime activity.

What Causes Growing Pains?

Here's the honest answer: the exact mechanism isn't fully settled in the research. Despite the name, growing pains don't appear to be directly caused by bones growing — bone growth itself doesn't produce pain of this kind.

What's more likely is a combination of factors:

Muscle fatigue from an active day. Children who run, jump, climb, and play hard all day accumulate significant muscle tension that manifests as evening aching. The more physically demanding the day, the more likely the evening pain.

Mechanical load on the lower extremities. Children's bodies are working hard — developing postural muscles, adjusting to a changing center of gravity, absorbing the impact of constant movement. The calf muscles, hip flexors, and thigh muscles carry a significant cumulative load. For some children, that load expresses itself as evening cramping.

Nervous system regulation still maturing. The body's pain-processing systems are still developing throughout childhood. Some children have a lower threshold for musculoskeletal discomfort than others — not because something is wrong, but because their nervous systems are still learning to filter and modulate sensation. This is why the same activity level produces pain in one child and not in another.

Flat feet or low arches. Children with significant foot pronation place additional strain on the lower leg muscles and connective tissues throughout the day. When flat feet are a contributing factor, the right footwear can make a meaningful difference in how often evening pain occurs.

The Nervous-System Perspective

At Little Roots, when a family comes in with a child experiencing frequent or severe growing pains, one of the things our team looks at is how the child's spine and nervous system are functioning. Not because growing pains are a spinal problem in themselves, but because the nervous system is the underlying regulator for how the body experiences and processes physical sensation — including how muscle aching is amplified or dampened.

Children whose nervous systems are carrying significant background tension — from birth history, early falls, heavy school bags, or the cumulative stress of a very active body — may experience more frequent or more intense muscle aching than peers with similar activity levels. Supporting that underlying nervous-system tone can sometimes shift the pattern.

This doesn't mean every child with growing pains needs a chiropractic evaluation. But if the pain is occurring multiple nights per week, is severe enough to significantly disrupt sleep, or is starting to affect how your child feels about physical activity, understanding what's happening structurally gives you more information than guessing.

Each child is different. Our team takes a personalized approach based on what your child's nervous system is showing us.

What Helps When Your Child Is in Pain

Several approaches have solid backing — both in the moment and as a longer-term strategy:

Massage. Firm, slow massage of the affected muscle group is consistently the most helpful immediate intervention. Parents who learn basic calf and thigh massage techniques often find they can resolve a nighttime episode in a few minutes. This is worth learning and having in your back pocket.

Gentle stretching before bed. Calf stretches, hip flexor lengthening, and hamstring stretches done as a quiet bedtime routine — before pain starts — can reduce how often episodes occur for many children. Building this into the evening wind-down is one of the most practical things a parent can do.

Warm compresses or a warm bath. Heat increases blood flow and reduces muscle tension. A warm bath before bed or a heating pad on the aching leg helps calm muscle spasm when pain is present.

Hydration through the day. Dehydrated muscles are more prone to cramping. For children who are very physically active, ensuring adequate fluid intake through the school day — not just at meals — can reduce evening symptoms for some kids.

Appropriate footwear. If flat feet or pronation are a contributing factor, properly fitted shoes — and in some cases, over-the-counter arch supports — can reduce the lower-leg mechanical load that builds up through the day.

Magnesium. Some families and practitioners report improvement with magnesium, which plays a role in muscle contraction and relaxation. Worth discussing with your pediatrician before adding any supplement.

When Growing Pains Deserve a Closer Look

Classic growing pains are generally benign. But certain signs call for evaluation by your pediatrician or a musculoskeletal specialist:

• Pain in only one leg (growing pains are almost always bilateral)
• Swelling, warmth, or redness in a joint
• Limping or difficulty walking during the day
• Pain that persists into the morning and limits normal activity
• Pain centered on a joint — hip, knee, or ankle — rather than the muscle
• Fever alongside the pain
• Symptoms that are steadily worsening rather than staying stable

These features can point toward conditions including juvenile arthritis, Legg-Calvé-Perthes disease, slipped capital femoral epiphysis, or infection — all of which need specific medical attention. The key distinction: growing pains come and go without any daytime impact; pain that limits your child's movement or interrupts daily life is a different kind of signal.

If you're unsure whether what your child is experiencing fits the classic pattern, a new patient evaluation at Little Roots can help assess what's happening structurally and point you in the right direction.

Frequently Asked Questions

At what age do growing pains start and stop?

Most commonly between ages 3 and 5 in early childhood, with a second common peak between ages 8 and 12. They typically resolve on their own by early teenage years as the body's musculoskeletal development levels off. Some children experience them sporadically; others have them weekly for extended periods. Both patterns fall within the typical range.

Are growing pains always in the legs?

The vast majority of what's classified as growing pains occurs in the legs — calves, thighs, and behind the knees are the most common spots. Occasional aching in the arms is reported but far less common. Back pain is not typical of growing pains and warrants a different look, especially in school-age children who carry heavy backpacks or spend a lot of time at a desk.

What helps growing pains at night when they wake a child from sleep?

In the moment: massage the affected muscle firmly and slowly, apply gentle heat (heating pad or warm towel), and have your child do a simple standing calf stretch with your help. These three steps together usually provide relief within a few minutes. For recurring nighttime pain, adding a brief stretching routine before bed is the most practical prevention strategy.

What causes growing pains in children?

The short answer is a combination of muscle fatigue, the mechanical demands of an active day, and a nervous system that's still developing its pain-modulation capacity. Bone growth itself doesn't appear to be the direct cause, despite the name. Contributing factors can include very high activity levels, flat feet, and nervous-system tone — all of which are worth understanding if pain is frequent.

Should I see a pediatric chiropractor for growing pains?

If growing pains are frequent, severe enough to regularly disrupt sleep, or accompanied by other patterns like sleep difficulty, recurring colic, or significant nervous-system sensitivity, a pediatric chiropractic evaluation adds a useful perspective. Our team at Little Roots assesses what's happening in the spine and nervous system and gives you a clear, honest picture of what may be contributing and what may help.

A child waking up crying with aching legs deserves more than just "they'll grow out of it." Sometimes they do — and sometimes understanding what's happening in their body makes a real difference. If your child's growing pains are frequent, severe, or starting to affect sleep and daily life, we're here to take a closer look.

Book a new patient appointment at Little Roots Pediatric Chiropractic in Lakewood Ranch — a full evaluation to understand what's happening in your child's body and give you practical, honest guidance on what may help.

Little Roots Pediatric Chiropractic, 8209 Natures Way, Unit 117, Lakewood Ranch, FL 34202. (941) 932-4611.