High calcium levels in the blood can lead to vomiting, constipation, fatigue, excessive thirst and excessive urination. The normal calcium levels in the blood range from 8.5 to 10.2 milligrams per deciliter, notes the United States National Institutes of Health's MedlinePlus.
Individuals with high calcium levels in their system are said to be suffering from a condition called hypercalcemia. Some possible causes of this condition include side effects of certain drugs, lung diseases and cancers, dietary supplements, hyperthyroidism and dehydration. Proper levels of calcium in the body help in bone development, muscle and nerve functions, notes MedicineNet.
Individuals with hypercalcemia are likely to experience painful sensations in the middle section of the back and the upper part of the abdomen. Nausea that leads to vomiting is a common symptom of the condition. Constipation may equally become a problem.
These individuals often develop muscle twitches and weakness because calcium does not function properly. Other effects of high calcium levels include loss of height, bowed shoulders, pain in the bones and fractures from diseases. Certain cases of this condition can lead to development of kidney stones or kidney failure.
Treatment for this condition often aims at returning calcium levels to normal ranges and preventing organ damage. Dealing with the underlying cause is one of the ways of correcting the problem. Certain medications may equally be effective.