Cushing's syndrome is the result of the excessive production of corticosteroids by the adrenal glands. An overproduction of corticotropin (ACTH) - the hormone that controls the adrenal gland - by the pituitary gland, which stimulates the adrenal glands to produce corticosteroids, may be one cause. It is called Cushing's disease and the result of ACTH-secreting pituitary adenoma. Alt.
deficiency. a lack or shortage; a condition characterized by the presence of less than the normal or necessary supply or competence. color vision deficiency see color vision deficiency.
noun. natural substances found in food that are necessary to keep your body healthy. Each vitamin is given a name using a letter of the alphabet, for example vitamin C which is found in many fruit and vegetables.A vitamin deficiency is a medical condition caused by lack of vitamins.oun. natural substances found in food that are necessary to keep your body healthy. Each vitamin is given a name using a letter of the alphabet, for example vitamin C which is found in many fruit and vegetables.