​Symptoms of High Blood Calcium

​​High Blood Calcium is Bad is a national campaign to increase awareness of the dangers of high blood calcium. Blood calcium that is even a little bit high can cause serious health problems.

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:


  • Loss of energy. Don't feel like doing much. Tired all the time.
  • Chronic fatigue. (#1 symptom)
  • Just don't feel well; don't quite feel normal. Hard to explain but just feel kind of bad.
  • Feel old. Don't have the interest in things that you used to.
  • Can't concentrate, or can't keep your concentration like in the past.
  • Depression. (blog)
  • Osteoporosis and Osteopenia.
  • Bones hurt; typically it's bones in the legs and arms but can be most bones.
  • Don't sleep like you used to. Wake up in middle of night. Trouble getting to sleep.Tired during the day and frequently feel like you want a nap (but naps don't help). 
  • Spouse claims you are more irritable and harder to get along with (cranky, bitchy). (blog)
  • Forget simple things that you used to remember very easily (worsening memory).
  • Gastric acid reflux; heartburn; GERD. (blog)
  • Decrease in sex drive. (blog)
  • Thinning hair (predominately in middle aged females on the front part of the scalp).
  • Kidney Stones (and eventually kidney failure). (blog)
  • High Blood Pressure (sometimes mild, sometimes quite severe; up and down a lot).
  • Recurrent Headaches (usually patients under the age of 40).
  • Heart Palpitations (arrhythmias). Typically atrial arrhythmias. (blog)
  • Atrial Fibrillation (rapid heart rate, often requiring blood thinners and pacemakers). (blog)
  • High liver function tests (liver blood tests).
  • Development of MGUS and abnormal blood protein levels.

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

​​High Blood Calcium Is Bad