Scurvy is an acquired condition caused by a prolonged deficiency of vitamin C (L-ascorbic acid). Vitamin C is a water-soluble, essential vitamin that can only be obtained through the diet. It is an essential cofactor in the cross-linking and stabilization of collagen; thus, deficiency of this nutrient causes impaired collagen synthesis, leading to poor wound healing, capillary fragility, and bone abnormalities.

Scurvy is a relatively rare diagnosis in the developed world. Pathognomonic clinical findings of scurvy include gingival bleeding and perifollicular petechiae with corkscrew hairs. Other common features include vascular fragility, manifesting as purpura, petechiae, ecchymoses, and gastrointestinal bleeding. Spontaneous hemorrhage into muscles, soft tissues, and joints can cause painful hematomas and hemarthroses. Symptoms include fatigue, weakness, muscle cramping, and malaise as well as cognitive impairment and mood disturbances.

Risk factors for developing scurvy include alcohol use, low socioeconomic status, restrictive diets or dietary fads, obesity, psychiatric disease, and malabsorption due to gastrointestinal disease. Additionally, the elderly, especially those in social isolation; patients on dialysis; and individuals with increased metabolic requirements (such as pregnant or lactating individuals and patients with severe infections) are at increased risk. People who chronically abuse alcohol are particularly susceptible to scurvy not only due to poor dietary intake but also decreased ascorbic acid absorption.