Most people with primary hyperparathyroidism have no symptoms. When symptoms appear, they are often mild and nonspecific, such as - muscle weakness - fatigue and an increased need for sleep - feelings of depression - aches and pains in bones and joints People with more severe disease may have - loss of appetite - nausea - vomiting - constipation - confusion or impaired thinking and memory - increased thirst and urination These symptoms are mainly due to the high blood calcium levels that result from excessive PTH. 
What are the symptoms of Primary Hyperparathyroidism ?