"Secondary Raynaud's; Bilateral arterial and arteriolar cyanosis of the fingers due to vasoconstriction of uncertain cause; may be brought on by low temperatures or emotional stress.
Symptoms:
Nails become brittle with longitudinal ridges
Atrophy of the skin, subcutaneous tissues, and muscle
Ulceration and ischemic gangrene
Pain within the affected extremities
Discoloration (paleness)
Sensations of cold and/or numbness
Causes:
Result of vasospasms that decrease blood supply to the respective regions
Connective tissue disorders such as systemic lupus erythematosus
Rheumatoid arthritis
Anorexia nervosa
Atherosclerosis
Thoracic outlet syndrome
Beta-blockers
Jobs involving vibration, particularly drilling, suffer from vibration white finger
