Rickets

What is Rickets?

Rickets is a childhood disease that softens and weakens bones as they grow. It happens when the body does not get enough vitamin D, calcium, or phosphate to build strong bones. These nutrients work together to help bones harden and develop normally during childhood.

Without proper bone mineralization, a child's bones become soft and can bend or become deformed. The long bones in the legs are often most affected, leading to bowed legs or knock knees. Rickets is rare in developed countries today but can still occur when children do not get enough vitamin D from sunlight or diet.

Most cases respond well to treatment when caught early. The condition is most common in children between 6 months and 3 years old, when bones are growing fastest. Early detection through blood testing can prevent permanent bone deformities and support healthy development.

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Symptoms

Bowed legs or knock knees
Thickening of wrists and ankles
Delayed growth and short stature
Bone pain or tenderness
Muscle weakness and low muscle tone
Soft skull bones in infants
Delayed walking or crawling
Dental problems and delayed tooth formation
Curved spine or other skeletal deformities
Frequent bone fractures

Some children may show subtle symptoms early on that parents mistake for normal developmental variation. Bone changes can begin before visible deformities appear, making blood testing important for at-risk children.

Causes and risk factors

Rickets is primarily caused by vitamin D deficiency, which prevents the body from absorbing enough calcium and phosphate. Children who get limited sun exposure are at higher risk because the skin makes vitamin D when exposed to sunlight. Infants who are exclusively breastfed without vitamin D supplements can develop rickets because breast milk contains low levels of vitamin D. Darker skin requires more sun exposure to produce the same amount of vitamin D, increasing risk in some populations.

Dietary factors also contribute to rickets development. Children who do not consume enough calcium or phosphate from food may develop the condition even with adequate vitamin D. Some rare genetic disorders affect how the body processes vitamin D or manages minerals. Digestive conditions like celiac disease or inflammatory bowel disease can interfere with nutrient absorption. Premature infants have higher needs for bone-building nutrients and face increased risk.

How it's diagnosed

Doctors diagnose rickets through physical examination, medical history, and blood tests. A physical exam may reveal bowed legs, bone tenderness, or skeletal deformities. X-rays can show bone changes like widened growth plates or decreased bone density. Blood tests are essential for confirming the diagnosis and identifying the underlying cause.

Key blood tests for rickets include vitamin D levels, calcium, phosphate, and alkaline phosphatase. Low vitamin D and calcium levels indicate nutritional deficiency. Elevated alkaline phosphatase reflects increased bone cell activity as the body attempts to mineralize defective bone tissue. Rite Aid offers comprehensive blood testing that measures all four key biomarkers for detecting and monitoring rickets. Regular testing helps track treatment progress and ensures children are getting the nutrients they need for healthy bone development.

Treatment options

Vitamin D supplementation at doses prescribed by a doctor
Calcium and phosphate supplements if dietary intake is insufficient
Increased sun exposure with appropriate skin protection
Dietary changes to include vitamin D-rich foods like fatty fish, egg yolks, and fortified milk
Calcium-rich foods including dairy products, leafy greens, and fortified foods
Regular monitoring through blood tests to ensure nutrient levels improve
Physical therapy in some cases to support muscle strength and development
Treatment of underlying digestive disorders that interfere with nutrient absorption
Genetic counseling and specialized treatment for hereditary forms of rickets

Frequently asked questions

Rickets most commonly affects children between 6 months and 3 years old, when bones grow fastest. Infants and toddlers are especially vulnerable because they rely on caregivers for nutrition and sun exposure. Premature babies face higher risk due to increased nutrient needs. Adolescents can occasionally develop rickets during growth spurts if they have severe vitamin D deficiency.

Yes, rickets is highly preventable through adequate vitamin D intake and sun exposure. Breastfed infants should receive vitamin D drops starting in the first days of life. Children should spend some time outdoors regularly and eat foods rich in vitamin D and calcium. Many pediatricians recommend vitamin D supplements for all children, especially those with darker skin or limited sun exposure.

Mild bone changes often improve significantly with early treatment, especially in young children whose bones are still growing. Severe deformities that develop over time may not fully reverse, though treatment prevents further damage. Starting treatment early gives the best chance for bones to develop normally. Some children with permanent deformities may need braces or surgery later.

Most children show improvement in blood test results within weeks of starting vitamin D and calcium supplements. Visible bone healing on x-rays typically takes several months. Complete resolution of symptoms and bone changes usually requires 3 to 6 months of consistent treatment. Doctors monitor progress with regular blood tests to ensure nutrient levels normalize.

No, rickets and osteoporosis are different conditions affecting different age groups. Rickets occurs in children and involves impaired bone formation during growth. Osteoporosis affects adults and involves loss of existing bone mass. Both conditions result in weakened bones but require different approaches to treatment and prevention.

Adults do not get rickets because their bones have finished growing. However, adults can develop a similar condition called osteomalacia, which also involves soft bones from vitamin D deficiency. Osteomalacia causes bone pain and muscle weakness but does not produce the growth deformities seen in rickets. The same blood tests detect both conditions.

Foods rich in vitamin D include fatty fish like salmon and mackerel, egg yolks, and fortified milk. Many dairy products provide both vitamin D and calcium for bone health. Fortified cereals and orange juice can also contribute vitamin D. Leafy green vegetables, tofu, and canned sardines with bones provide calcium.

Most children need about 15 to 30 minutes of sun exposure several times per week to maintain healthy vitamin D levels. The exact amount depends on skin tone, geographic location, and season. Children with darker skin need more sun exposure than those with lighter skin. Sunscreen blocks vitamin D production, so brief unprotected exposure may be beneficial before applying sunscreen.

Yes, breastfed infants without vitamin D supplements face higher risk. Children with dark skin living in northern climates are vulnerable due to reduced vitamin D production. Kids with digestive disorders that affect nutrient absorption may develop rickets. Children who avoid dairy products or follow restrictive diets without proper supplementation also have increased risk.

Yes, blood tests measuring vitamin D, calcium, phosphate, and alkaline phosphatase can detect rickets before visible symptoms appear. These tests identify nutrient deficiencies and show how actively the body is trying to build bone. Early detection through routine blood testing allows treatment to begin before permanent bone deformities develop. Rite Aid offers comprehensive blood testing that includes all four key markers for rickets screening.