Can Untreated Juvenile Arthritis Affect Height and Growth? A Rheumatologist Explains

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When people hear the word arthritis, they usually imagine elderly individuals with knee pain. Very few realise that arthritis can affect children too.

Juvenile Idiopathic Arthritis, or JIA, is one of the common chronic rheumatic diseases seen in children. Unfortunately, many children in India are diagnosed late because persistent joint pain is often dismissed as "growing pain," vitamin deficiency, weakness, or simply lack of physical activity.

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We spoke to Dr Aruna S Malipeddi, Senior Consultant-Rheumatology, Arete Hospitals, who explained the impact of untreated arthritis on height and growth.

Untreated Arthritis Can Slow a Child's Growth

One question parents ask often: can untreated juvenile arthritis really affect height? Dr Malipeddi's answer is direct - yes, in some children, significantly.

"Chronic inflammation does not affect only joints. It affects the whole body. When inflammation continues uncontrolled for months or years, growth can slow down. Some children may gain less height than expected for their age, while others may develop uneven growth involving specific limbs or joints, said Dr Malipeddi.

The Body Under Constant Inflammation

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The mechanism, Dr Malipeddi explains, is fairly straightforward. A child's body needs energy and proper hormonal balance for normal growth. Persistent inflammation interferes with growth hormones, appetite, nutrition, sleep, and physical activity. In severe disease, children may become less active because of pain and stiffness, further affecting muscle and bone development.

Doctors also see chronic knee or ankle inflammation change the way a child walks. Over time, this can alter posture and limb alignment - problems that go well beyond the joint that started it.

The Double-Edged Sword of Long-Term Steroids

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"Steroids are often necessary and effective for controlling inflammation during difficult phases of juvenile arthritis. But used for extended periods without close monitoring, they can also interfere with normal growth. This is why current treatment strategies aim to minimise prolonged steroid exposure wherever possible, leaning instead on earlier, more stable disease control through other medications," explained Dr Malipeddi.

The Signs Parents and Teachers Often Miss

Juvenile arthritis can also be difficult to recognise in the early stages because symptoms are often subtle rather than dramatic. In many children, the early signs are easy to miss. A child may move slowly for a while after waking up or seem to favour one leg while walking. Some stop running around as much as they used to or avoid games they previously enjoyed because certain movements start feeling uncomfortable.

"Occasionally, small day-to-day changes become noticeable at school first, including messier handwriting, trouble holding a pencil properly, or weakness while using the hands due to swelling in the finger joints," added Dr Malipeddi.

In younger children, symptoms can be subtle. They may refuse to walk long distances, avoid stairs, or ask to be carried more often. Because children cannot always explain pain clearly, diagnosis may be delayed.

Growth Can Recover Once Inflammation Is Controlled

The reassuring part is that early treatment can make a major difference. With timely rheumatology care, physiotherapy, nutritional support, and appropriate medications, many children grow normally and lead active lives.

Modern biologic therapies have also transformed outcomes for children with severe disease. We now have far better control over inflammation than we did a decade ago.

Why Ongoing Follow-Up Matters

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"Another important point is that growth problems may improve once inflammation is brought under control. Children often regain energy, appetite, and physical confidence after proper treatment begins. Regular follow-up is important because doctors monitor not only joint health, but also height, weight, nutrition, eye health, and overall development," advised Dr Malipeddi.

Managing juvenile arthritis usually requires a team approach involving paediatric rheumatologists, physiotherapists, parents, and schools working together to support the child's daily routine and long-term wellbeing.

What Should Prompt a Visit to the Doctor

Dr Malipeddi warned, "Parents should seek evaluation if a child has persistent joint swelling, prolonged morning stiffness, unexplained limp, recurrent fevers with joint symptoms, or reduction in activity levels lasting more than a few weeks."

Children are not supposed to live with chronic joint pain. The earlier inflammation is controlled, the better the chances of protecting not just joints, but normal growth and development too.

Disclaimer: The information provided in this article is for general informational and educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or a qualified healthcare provider with any questions you may have regarding a medical condition.