Calcium, which is stored in the bones, is regulated by the thyroid, parathyroid and kidneys.  In some cases, children may have too little calcium in the blood which is a condition called hypocalcemia.  Conversely, when a child has too much calcium in their blood, it is referred to as hypercalcemia.

Hypocalcemia vs Hypercalcemia

Parathyroid hormone and calcitonin are the two hormones that regulate the release of calcium from the bones into the bloodstream.  While calcium is most commonly known for its role in bone health and development, it has other key purposes within the body.   For example, our bodies also use calcium for proper muscle contraction, including the heart, nerve conduction and other bodily functions. When there is too much or too little calcium in the blood, symptoms become evident.  The following chart outlines the difference between the two disorders.