Toddler Limping: When to Worry

When to get help

NHS guidance on hip pain in children asks you to ask for an urgent GP appointment or get help from NHS 111 if your child gets sudden pain in their hip, thigh or knee, noting that hip problems can sometimes be felt in the thigh or knee, or if your child is limping or cannot put any weight on one leg. That is the baseline: a limp is a reason to be seen, not a reason to wait and see.

The combination that must not wait is a limp plus a fever. A hot, painful, swollen joint in a feverish child can be septic arthritis, an infection inside the joint, and it is a surgical emergency. NHS guidance lists an infected hip joint among the less common but more serious causes of hip pain in children, and asks you to take your child back to the GP urgently if they develop a high temperature or feel hot, cold or shivery.

NICE guidance on fever in under 5s reinforces this from the other direction. In its traffic light system for identifying risk of serious illness, "swelling of a limb or joint" and "non-weight bearing limb or not using an extremity" both appear in the amber column, meaning a feverish child with either of those signs is at intermediate risk of serious illness and needs assessment rather than watchful waiting at home.

Get urgent help if your child

Raising Children Network sets out the situations that warrant prompt medical review: limping for more than a day with no obvious cause such as a tight shoe or something in the shoe; unexplained fever or night sweats; refusing to walk at all; obvious swelling or redness on part of the hip or leg, especially around a joint; pain that is constant or severe; or unexplained weight loss or a change in appetite.

What usually causes it

Irritable hip, also called transient synovitis, is the most common cause of hip pain in children. NHS guidance describes it as the hip joint becoming sore and inflamed, and says it can be painful but is not usually serious and often gets better by itself. It commonly follows a viral illness such as a cold, sore throat or a bout of diarrhoea and vomiting, which is why a limp appearing a week after a cold is such a familiar pattern.

Raising Children Network lists the other common causes: bruising to the leg or foot, an ankle sprain, a tight shoe and a wart on the sole of the foot. The last of those is worth taking seriously, because a foreign body, a splinter or a verruca is easy to miss and easy to fix. Checking both feet and the inside of both shoes before doing anything else is a reasonable first move at home.

The less common but more serious causes include a fracture, a bone or joint infection, developmental dysplasia of the hip, Perthes' disease, which NHS guidance describes as a problem with the hip bones and the blood supply to the hip joint, arthritis, and rarely a bone tumour.

What a limp looks like at this age

Toddlers do not report pain reliably, so the limp is often the only symptom. Raising Children Network describes what to look for: your child will appear to walk in an unusual way, putting more weight on the leg that does not hurt and as little weight as possible on the leg that does, and they might sway their body from side to side. A limp can also change the way the muscles work and make them ache from the increased strain.

Where the pain is felt is not where the problem is. A hip problem is frequently reported as knee or thigh pain, which is why NHS guidance mentions all three locations in the same sentence. A child pointing at their knee does not rule out the hip.

What happens at the appointment

NHS guidance describes the assessment: a doctor or nurse may look at and feel your child's hip, leg or knee, try gently moving the leg in different directions, ask about any recent injuries or illnesses, and arrange an X-ray. Sometimes a blood test or other scans are done to confirm it is nothing serious. Raising Children Network adds that imaging might include an X-ray, an ultrasound or occasionally a bone scan.

The purpose of the tests is usually exclusion rather than diagnosis. Irritable hip is diagnosed largely by ruling out infection and fracture, so a normal result set is the good outcome, not a wasted trip.

Looking after a child with irritable hip

NHS guidance says irritable hip usually gets better in one or two weeks and does not cause lasting problems, and that you can usually look after your child at home. It advises making sure they rest the leg until they are feeling better and keeping them off nursery or school until they have recovered, and attending any follow-up appointments recommended by your doctor or nurse. It advises against activities that could put a lot of strain on the hip for at least two weeks, with a gradual return to normal activities once they feel better; swimming is suggested as a good way to get the joint moving again.

Pain relief is appropriate. Both NHS and Raising Children Network guidance name paracetamol and ibuprofen as options for a child in pain. Follow the instructions on the packaging for your child's age, or ask a pharmacist, and do not give aspirin to a child under 16.

Raising Children Network gives a slightly different recovery window for irritable hip, describing it as usually getting better on its own in 3 to 14 days, and stresses that a child with irritable hip needs careful follow-up to check that symptoms are improving.

Go back if it is not improving

NHS guidance asks you to take your child back to the GP if the hip pain is getting worse or has not improved, if they get a high temperature or feel hot, cold or shivery, if they are still in pain after two weeks, or if the hip pain went away but has come back. Any of these might mean a more serious problem, and a recurring limp in particular should not be assumed to be another episode of the same harmless thing.