Scurvy is a disease caused by a vitamin C deficiency which prevents the body from producing collagen. Symptoms include spots and bleeding in the skin and gums, pale appearance, depression, and immobilization. Advanced scurvy causes open, infected wounds and tooth loss. Scurvy can be prevented by consuming citrus fruits like oranges and lemons, or other foods containing vitamin C such as berries, peppers, and vegetables. Treatment involves taking vitamin C supplements.