<unk>  is an endocrine disorder that the parathyroid glands produce too much parathyroid hormone (PTH). The most important cause of<unk>  is chronic renal failure. Other causes include rickets, malnutrition or malabsorption, and certain types of cancer. Signs and symptoms include symptoms of diseases above, such as weakness, poor growth, bowed limbs and swollen joints in children, bone pain, osteomalacia, osteoporosis, fractures, even symptoms of certain cancer. Blood tests of parathyroid hormone and biochemistry, and imaging tests may help the diagnosis of<unk> . Treatments and prognosis of<unk>  depend on the underlying cause.
Secondary hyperparathyroidism
Primary parathyroid hyperplasia
Pseudohyperparathyroidism
Familial hypocalciuric hypercalcemia
Pseudohypoparathyroidism
Pseudopseudohypoparathyroidism
Parathyroid adenoma
Hypoparathyroidism