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Rickets |
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If a vitamin D or calcium deficiency causes rickets, adding vitamin D or calcium to the diet generally corrects any resulting bone problems for your child. Rickets due to a genetic condition may require additional medications or other treatment. Some skeletal deformities caused by rickets may need corrective surgery.
SYMPTOMS
Signs and symptoms of rickets may include:
Delayed growth Pain in the spine, pelvis and legs Muscle weakness
Because rickets softens the growth plates at the ends of a child's bones, it can cause skeletal deformities such as:
Bowed legs Thickened wrists and ankles Breastbone projection
Talk to your doctor if your child develops bone pain, muscle weakness or obvious skeletal deformities.
CAUSES
Your body needs vitamin D to absorb calcium and phosphorus from food. Rickets can occur if your child's body doesn't get enough vitamin D or if his or her body has problems using vitamin D properly.
Lack of vitamin D
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Sunlight. Your skin produces vitamin D when it's exposed to sunlight. But children in developed countries now tend to spend less time outdoors. They're also more likely to use sunscreen, which blocks the rays that trigger the skin's production of vitamin D. Food. Fish oils, fatty fish and egg yolks contain vitamin D. Vitamin D also has been added to some foods, such as milk, cereal and some fruit juices. Children who don't eat enough of these fortified foods can develop a vitamin D deficiency.
Problems with absorption
Some children are born with or develop medical conditions that affect the way their bodies absorb vitamin D. Some examples include:
Celiac disease Inflammatory bowel disease Cystic fibrosis Kidney problems
Factors that may increase a child's risk of rickets include:
Age. Children 3 to 36 months old are most at risk of rickets because their skeletons are growing so rapidly. Dark skin. Dark skin doesn't react as strongly to sunshine as does lighter colored skin, so it produces less vitamin D. Northern latitudes. Children who live in geographical locations where there is less sunshine are at higher risk of rickets. Premature birth. Babies born before their due dates are more likely to develop rickets. Anti-seizure medications. Certain types of anti-seizure medications appear to interfere with the body's ability to use vitamin D. Exclusive breast-feeding. Breast milk doesn't contain enough vitamin D to prevent rickets. Babies who are exclusively breast-fed should receive vitamin D drops.
COMPLICATIONS
If left untreated, rickets may lead to:
Failure to grow Abnormally curved spine Skeletal deformities Dental defects Seizures
DIAGNOSIS
During the exam, the doctor will gently press on your child's bones, checking for abnormalities. He or she will pay particular attention to your child's:
Skull. Babies who have rickets often have softer skull bones and may experience a delay in the closure of the soft spots (fontanels). Legs. While even healthy toddlers are a little bowlegged, an exaggerated bowing of the legs is common with rickets. Chest. Some children with rickets develop abnormalities in their rib cages, which may flatten and cause their breastbones to protrude. Wrists and ankles. Children who have rickets often have wrists and ankles that are larger or thicker than normal.
X-rays of the affected bones can reveal bone deformities. Blood and urine tests can confirm a diagnosis of rickets and also monitor the progress of treatment.
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Most cases of rickets can be treated with vitamin D and calcium supplements. Follow your doctor's directions as to dosage, which may vary by the size of your child. Too much vitamin D can be dangerous.
Surgical and other procedures
For some cases of bowlegs or spinal deformities, your doctor may suggest special bracing to position your child's body appropriately as the bones grow. More severe skeletal deformities may require surgery.
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