Neurogenic shock is a distributive type of shock. It is a type of shock (a life-threatening medical condition in which there is insufficient blood flow throughout the body) that is caused by the sudden loss of signals from the sympathetic nervous system that maintain the normal muscle tone in blood vessel walls.
Osteoporosis is classified as a metabolic bone disorder. It occurs when the creation of new bone doesn't keep up with the removal of old bone. It also causes bones to become weak and brittle — so brittle that a fall or even mild stresses such as bending over or coughing can cause a fracture.