The depressive state can be agitated in which case sustained tension, overactivity, despair, and apprehensive delusions predominate or it can be retarded in which case the person's activity is slowed and reduced, the person is sad and dejected, and he or she suffers from self-depreciatory and self-condemnatory tendencies.
Occasionally it may be necessary to use drugs or radiation therapy, in the form of radioactive phosphorus, to restrain the overactivity of the marrow cells.
Gross overactivity in children can have many causes, including anxiety, conduct disorder (discussed below), or the stresses associated with living in institutions.
An excess in purple-red pigments in the blood intoxicated all parts of the nervous system, producing the agonizing pain, excited overactivity, paralysis, and delirium that the king suffered in an acute form at least four times during his reign.
Noninfectious blepharitis is most commonly caused by seborrhea, a skin disorder arising from overactivity of the sebaceous glands, or by dysfunction of the meibomian glands, which are oil-secreting glands located along the lid margin behind the eyelashes.
Cushing syndrome, disorder caused by overactivity of the adrenal cortex.
Renal osteodystrophy, also called renal rickets, chronic, probably hereditary disorder characterized by kidney dysfunction, bone-mineral loss and rickets-type deformities, calcifications in abnormal places, and overactivity of the parathyroid glands.
The drug can stimulate the release of dopamine from certain cells in the brain and can block the receptors of excitatory molecules involved in causing overactivity of neurons that control movement.
Once it has entered the body, the toxin rapidly spreads by way of the bloodstream or directly by a nerve to the central nervous system, where it attacks motor nerve cells and excites them to overactivity.
In addition, kidney transplantation is associated with overactivity of the parathyroid glands and osteonecrosis.
The overactivity of the parathyroids is ascribed to the fact that, prior to correction of the kidney disease, the glands have had to function at an abnormally high level for such a long time that the mechanisms for shutting them off have become deficient.
