Growing pains in the knees respond well to a combination of gentle massage, heat, stretching, and in some cases, over-the-counter pain relievers. The pain is real, even though nothing is structurally wrong with your child’s legs. It typically strikes in the late afternoon or evening, often wakes kids from sleep, and disappears completely by morning.
Despite the name, growing pains have no proven connection to growth spurts. The condition most commonly affects children between ages 4 and 6, with the peak at age 6, though it can persist into early adolescence. The knees and the area behind the knees are among the most common pain sites, along with the shins, calves, and thighs. Pain almost always occurs in both legs and comes and goes, typically one or two episodes per week with pain-free days in between.
Massage and Heat for Quick Relief
When your child wakes up crying or complaining about knee pain at night, start with a gentle leg rub. Massaging the muscles around and above the knee often brings noticeable relief within minutes. You don’t need any special technique. Slow, firm strokes along the front and back of the thigh and around the kneecap work well. Many children also feel better simply being held or cuddled, which may relate to the role that stress and emotional factors play in pain perception.
A heating pad set on low is another effective option. Place it over the sore area before bedtime or when pain flares up, and remove it once your child falls asleep. A warm bath before bed can serve the same purpose, relaxing the leg muscles and reducing the likelihood of a nighttime episode.
Stretching to Reduce Pain Frequency
Stretching is the best-supported strategy for preventing growing pains, not just treating them in the moment. A daily routine targeting three muscle groups (the quadriceps in the front of the thigh, the hamstrings in the back, and the calf muscles) has been shown in controlled trials to reduce how often episodes occur. The routine works best when done twice a day, once in the morning and once in the evening, for about 10 minutes each session.
For a quadriceps stretch, have your child stand and hold onto a chair or wall for balance. They bend one knee and grab the top of that foot with the same-side hand, pulling the heel gently toward their backside while keeping both knees close together and standing tall. Hold for 30 seconds, then switch legs. Tight quads and hamstrings put extra mechanical stress on the knee area, so improving flexibility in these muscles directly addresses one of the factors that triggers pain.
For the hamstrings, a simple seated stretch works: your child sits on the floor with one leg straight and the other bent, then reaches forward toward the toes of the straight leg. Calf stretches can be done standing, leaning into a wall with one foot stepped back, heel pressed to the floor. Holding each stretch for 20 to 30 seconds and repeating two or three times per leg is a reasonable target.
When Over-the-Counter Pain Relief Helps
Ibuprofen can be useful on nights when stretching, massage, and heat aren’t enough. It reduces pain and any minor inflammation in the surrounding soft tissue. Dose by your child’s weight rather than age for accuracy, and use the measuring syringe that comes with the liquid form rather than a kitchen spoon. Ibuprofen can be given every 6 to 8 hours as needed, but it should not be used in children under 6 months old. Acetaminophen is an alternative if your child can’t take ibuprofen. Either one works best given shortly before bedtime on nights when you suspect pain is coming, rather than waiting until your child is already in distress.
The Role of Physical Activity
About 37% of parents report that their child’s growing pain episodes follow days with more physical activity than usual. Running, jumping, and climbing seem to be common triggers. This doesn’t mean you should limit your child’s activity, which is important for their overall development. Instead, use busy activity days as a cue. On evenings after a particularly active day, prioritize the stretching routine, offer a warm bath, and have a heating pad ready. Thinking of high-activity days as a signal rather than a problem gives you a practical way to stay ahead of the pain.
Vitamin D and Growing Pains
A surprisingly high percentage of children with growing pains turn out to be low in vitamin D. In one study of 120 children with growing pains, 87% had insufficient vitamin D levels. Other research has found rates as high as 94%. When these children received vitamin D supplements, their pain intensity dropped significantly.
The proposed explanation is that when vitamin D is low, bone tissue continues to form but in a softer, less mineralized state. This creates outward pressure on the pain-sensing fibers that line the outer surface of bones, producing the deep, aching sensation children describe. If your child has frequent growing pains, checking their vitamin D level with a simple blood test is worth discussing with their pediatrician. Correcting a deficiency may reduce how severe and how frequent the episodes are.
Signs That It’s Not Growing Pains
True growing pains follow a recognizable pattern: they come and go, affect both legs, settle in the muscles rather than directly in the joint, and leave no trace by morning. Several features should prompt a closer look:
- Pain in a single joint, especially with swelling or redness. Growing pains are muscular and bilateral. Joint swelling suggests something different.
- Stiffness or pain that’s worse in the morning. Growing pains resolve overnight. Morning stiffness lasting more than 15 to 20 minutes is a hallmark of juvenile idiopathic arthritis.
- Fever accompanying the pain. Growing pains don’t cause fever.
- Limping or refusal to bear weight. Children with growing pains walk and run normally between episodes.
- Pain that persists daily for more than six weeks. Chronic daily joint pain meets the timeline where conditions like juvenile arthritis begin to be considered.
Growing pains are benign and self-limiting, meaning they resolve on their own as your child moves through adolescence. In the meantime, a consistent stretching routine combined with heat and massage on painful nights gives most families a reliable way to manage them.