ADH (antidiuretic hormone): A peptide molecule that is released by the pituitary gland at the base of the brain after being made nearby (in the hypothalamus). ADH has an antidiuretic action that prevents the production of dilute urine (and so is antidiuretic).
A syndrome of inappropriate secretion of ADH may occur in association with oat-cell lung cancer, pancreatic cancer, prostate cancer, and Hodgkin’s disease as well as a number of other disorders. The inappropriate secretion of ADH results in the inability to put out dilute urine, perturbs fluid (and electrolyte) balance, and causes nausea, vomiting, muscle cramps, confusion and convulsions. ADH also can stimulate contraction of arteries and capillaries. ADH is also known as vasopressin.
- ADH secretion, inappropriate
ADH secretion, inappropriate: A condition that results in the inability to produce dilute urine and imbalance of fluids and electrolytes in the body, particularly lowering blood sodium. Symptoms include nausea, vomiting, muscle cramps, confusion, and convulsions. This syndrome may occur with oat-cell lung cancer, pancreatic cancer, prostate cancer, and Hodgkin’s disease, among other disorders. Also […]
Attention deficit hyperactivity disorder.
Adhesion: The union of two opposing tissue surfaces. This term is often used to refer to the sides of a wound, as well as to scar tissue strands that can form at the site of a previous operation, such as within the abdomen after a laparotomy.
- Adhesive capsulitis
Adhesive capsulitis: A condition in which a person has constant severe limitation of the range of motion of the shoulder due to scarring around the shoulder joint. Adhesive capsulitis is an unwanted consequence of rotator cuff disease that involves damage to the rotator cuff. The affected joint is characteristically painful and tender to palpation. Physical […]
Adipocyte: A fat cell, a connective tissue cell that has differentiated and become specialized in the synthesis (manufacture) and storage of fat. The adipocyte is important to the body in maintaining proper energy balance, storing calories in the form of lipids, mobilizing energy sources in response to hormonal stimulation, and commanding changes by signal secretions. […]