Raynauds syndrome or white finger
Raynaud's syndrome is characterized by damage to the blood vessels resulting in constriction of blood flow to the affected areas of the body. This obstruction limits the delivery of oxygen to those body parts and over time results in muscle and tissue damage. While the infirmity may affect a person's nose and ears, it most often strikes the hands and feet. The prolonged and persistent exposure to vibrations during work can be a factor in the development of the syndrome. The name white finger was given to this syndrome due to the ashen appearance of the fingers of someone who has this disorder. Usually, the body conserves heat by reducing blood circulation to the extremities, particularly the hands and feet. In people with Raynaud's syndrome, this control system becomes too sensitive to cold and greatly reduces blood flow in the fingers and toes. Left untreated, Raynaud's syndrome will finally result in the loss of control and sensation in the affected extremities.