Scurvy is deficiencey disease it occurs when the diet lacks the needed?
The U.S. National Library of Medicine's MedlinePlus resource provides information on Scurvy. Scurvy is a disease that occurs when a person has a sever lack of vitamin C in his diet. The sufferer experiences general weakness, anemia (red blood cell or hemoglobin deficiency that causes feelings of tiredness and weakness), gum disease, and skin hemorrhages. Pinpoint bleeding around hair follicles and "corkscrew hairs" are additional effects of scurvy, and bleeding along the gums is common…
Scurvy is a disease that occurs in the mouth when the body lacks vitamins, specifically vitamin C. Before the invention of fridges and freezers and many other preservatives, there was no way to keep food from going bad other than salt (which admittedly, didn't work very well). Sailors often went on long journeys exploring or trading, and any fruits or vegetables they had would go bad long before being able to restock again.