July is Juvenile Arthritis Awareness Month. As one of the more underrecognized conditions in pediatric health, we’ve seen the consequences of delayed diagnosis in our clinic.
When it comes to childhood leg pain, many parents have been told and/or subscribe to the adage, “It’s probably just growing pains.”
And sometimes it is. But the reflexive reassurance can come at a cost. Juvenile arthritis is one of the most common chronic illnesses affecting children, yet it can go undetected or misdiagnosed when symptoms first appear.
According to the Arthritis Foundation, juvenile arthritis (JA) affects hundreds of thousands of children in the U.S. It’s not a rare disease. In fact, there are many types of JA affecting kids in classrooms, on soccer fields, and in pediatricians’ waiting rooms every day; and the disease is sometimes mistaken for something else.
We’re physical therapists, not rheumatologists. We don’t diagnose JA. But we do work with children who have it, and we’ve become familiar with what it looks like when it’s been caught early versus when it hasn’t.
How to Identify Growing Pains
Growing pains typically affect both legs (bilateral), occurring in the thighs, calves, or shins rather than a single leg joint. They typically occur in the evening or at night, in children between three and twelve years old.
- They don’t cause visible swelling.
- They don’t cause stiffness.
- They resolve on their own with rest, gentle massage, or a warm bath.
- Individual pain episodes resolve by morning, but the condition itself can come and go intermittently over the course of months or years.
Unlike exercise-induced muscle soreness, growing pains appear in the evening or wake children from sleep, leaving them completely pain-free, active, and mobile without any limping by morning.
The Difference with JA
Juvenile arthritis involves active joint and tissue inflammation, whereas growing pains are entirely non-inflammatory. Morning stiffness is prolonged (often lasting 30 minutes or longer) and gradually improves as the child warms up and moves around. A child with juvenile idiopathic arthritis (JIA) might limp when they first get out of bed and loosen up as the day goes on.
Swelling, warmth, and reduced range of motion in a specific joint are all signs that warrant attention. So is a child who starts avoiding physical activity they used to enjoy, or who complains of pain after sitting in one position for too long.
It’s important to diagnose and treat JIA early. While growing pains rarely occur before age three, Juvenile Arthritis can affect toddlers; it often shows up as a morning limp or refusal to walk rather than verbal complaints of pain.
Not every child with morning stiffness has JIA. However, a child whose joint symptoms persist for six weeks or more should be professionally evaluated, rather than taking a “let’s wait and see” approach.
Signs Parents Should Watch For
- Joint pain, swelling, or stiffness that persists for six weeks or more
- Morning stiffness that improves as the day goes on
- Limping that’s worse after rest and better with movement
- Visible swelling or warmth in a specific joint
- A child who has started avoiding activities they previously enjoyed without a clear reason
- Unexplained, low-grade fevers or fatigue accompanying joint symptoms
None of these alone confirms JA. However, when they present together and persist over time, it warrants a conversation with a physician rather than another month of watching.
How We Treat Kids with Juvenile Arthritis
Physical therapy is not a cure for juvenile arthritis. It doesn’t address the autoimmune component, and it works alongside—not instead of—rheumatological care and medication when that’s indicated.
PT addresses is the physical aspect: muscle weakness, movement avoidance, compensatory patterns that develop when a joint hurts and the body quietly reorganizes around it.
That last piece is one that parents often don’t expect. Children tend to internalize incorrect compensatory postures or movements that persist even after a full recovery. These compensations burden other muscles and tendons, which can lead to other physical problems.
In practice, that can look like this: A child protects a painful knee by shifting weight to the other leg. Over weeks, the weight-shifting becomes habit. The unaffected hip starts working harder than it otherwise would. The low back tightens to compensate. By the time the original knee inflammation is better managed, there’s now a secondary problem that developed in response to the first one; in a joint that was never directly affected by the disease.
This is why we don’t just treat where it hurts. We look at how the whole body is moving and where the adaptations have spread.
Movement Matters, Even During Flares
One of the most common concerns we hear from parents is whether exercise is safe during a flare.
The answer is nuanced: rest has a role during active, severe flares, but extended inactivity can increase muscle atrophy, joint stiffness, and deconditioning that can compound the disease’s effects.
The goal isn’t to push through pain. Rather, we want to find the appropriate level of movement that keeps joints from stiffening further, maintains muscle mass around vulnerable joints, and preserves cardiovascular fitness. Low-impact and joint-friendly activities like walking, swimming, biking, and yoga are best, but kids with well-controlled JA can participate in just about any activity they wish, if approved by their doctor or physical therapist.
In our sessions, we work with the child to understand their relationship with movement and help them rebuild confidence in their body. A child who learns that they can move without always triggering pain is a different patient than one who has come to associate all physical activity with risk.
When to Seek Immediate Medical Evaluation
In some cases, the issue is bigger than growing pains or Juvenile Arthritis. Immediately seek medical attention if you see any of the following connected to your child’s leg pain:
- Unexplained fever, chills, or night sweats accompanying pain
- Visible joint warmth, redness, or soft-tissue swelling
- Inability or refusal to bear weight / persistent daytime limping (unilateral pain that’s isolated to a single joint or bone)
Connect with ProFysio Physical Therapy for JA Assistance from a Physical Therapist
Juvenile arthritis is manageable. Many children achieve remission with early, appropriate treatment. The trajectory for a child whose condition is caught early and managed well can look meaningfully different from one whose diagnosis was delayed by months or years.
Awareness is how that gap closes.
ProFysio Physical Therapy has served Monmouth and Middlesex County since 2013. We offer one-on-one care at five locations: Aberdeen, Middletown, Old Bridge, East Brunswick, and Edison. Our pediatric physical therapy program works alongside your child’s medical team to support movement, strength, and long-term joint health. Give us a call at (732) 812-5200 to learn more.