The symptoms of high blood calcium are the symptoms of hyperparathyroidism. Most people with even mild high calcium (adults with calcium levels between 10.2 and 10.6 mg/dl) will have 5 or 6 of these symptoms. Infrequently, the first symptom of high blood calcium can be a kidney stone, a stroke, or a heart attack. Usually, people with high blood calcium have multiple complaints that their doctor has chalked up to 1) being old, 2) menopause, 3) over weight, 4) depression, 5) anxiety, 6) normal for you, 7) needing more exercise, etc. Here are the classic symptoms of hyperparathyroidism and high blood calcium that we see every single day:
Most people with hyperparathyroidism will have 5 - 6 of these symptoms. Some will have lots of them. A few people will say they don't have any... but after an operation they will often say otherwise. 95% of people with hyperparathyroidism will have 4 or more of these symptoms. In general, the longer you have hyperparathyroidism, the more symptoms you will develop. Of course, while the symptoms are making you feel bad, there are complications that are developing at the same time.
For more information on symptoms of high blood calcium, go to the Symptoms Page of Parathyroid.com