a physical condition in which there is a disturbance of normal functioning

excessive secretion of parathyroid hormone resulting in abnormally high levels of calcium in the blood; can affect many systems of the body (especially causing bone resorption and osteoporosis)

inadequate secretion of parathyroid hormone resulting in abnormally low levels of calcium in the blood

excessive activity of the pituitary gland (especially overactivity of the anterior lobe which leads to excess secretion of growth hormone)

a glandular disorder caused by failure of function of the cortex of the adrenal gland and marked by anemia and prostration with brownish skin

a glandular disease or enlargement of glandular tissue (especially of the lymph glands)