Scurvy

Scurvy is a disease of malnutrition that results from a prolonged lack of vitamin C, also known as ascorbic acid, in the diet. Early symptoms include weakness, fatigue, and sore arms and legs, and without correction the condition can progress to a reduced red blood cell count, gum disease, changes in hair, and bleeding from the skin. It generally takes at least a month of little to no vitamin C intake before symptoms begin to appear, and in modern times it occurs most often among neglected children and others with severely restricted diets.