deficiency disease: any disease caused by a lack of an essential nutrient (as a vitamin or mineral)
disease: an impairment of health or a condition of abnormal functioning
conn's syndrome: disturbances in saltwater balance and symptoms of weakness and muscular cramps and twitching and convulsions and sometimes paralysis; usually caused by a benign tumor of the cortex of the adrenal gland that leads to excess secretion of aldosterone