Scurvy is a disease caused by a severe, prolonged deficiency of vitamin C. Without enough vitamin C, your body can’t produce stable collagen, the protein that holds together your skin, blood vessels, gums, and bones. Symptoms typically appear after one to three months of very low intake, and left untreated, scurvy can be fatal. It’s often thought of as a historical disease of sailors, but it still occurs today, particularly among people with limited diets.
Why Vitamin C Matters for Your Body
Vitamin C plays an essential role in building collagen, the most abundant protein in your body. Collagen acts like structural scaffolding for your skin, the walls of your blood vessels, your gums, your bones, and your tendons. To form properly, collagen fibers need to twist into a strong triple-helix shape. That step requires vitamin C. Specifically, it helps modify the building blocks of collagen (amino acids called proline) so they can lock into that stable structure.
When vitamin C runs out, your body keeps making collagen, but the collagen it produces is weak and malformed. Blood vessel walls become fragile and leak. Wounds stop healing. Gums break down. Bones lose integrity. Essentially, the connective tissue throughout your entire body starts to fall apart, which is why scurvy affects so many different parts of the body at once.
How Scurvy Symptoms Develop
The earliest signs tend to be vague: fatigue, general weakness, irritability, and aching in the legs or joints. These can easily be mistaken for other conditions or simply feeling run-down, which is one reason scurvy often goes unrecognized at first.
As the deficiency continues, more distinctive symptoms appear. The skin develops small, raised spots around hair follicles, especially on the legs and buttocks where blood pressure from gravity is highest. These spots are caused by tiny hemorrhages under the skin. Hairs become coiled into characteristic corkscrew shapes and may break off. Larger bruises and patches of purple discoloration spread across the skin.
The gums are another hallmark. They swell, turn a bluish-purple color, feel spongy, and bleed easily. Infection can set in, and teeth may loosen. Existing wounds reopen. Old fractures can re-break. In severe cases, bleeding can occur inside joints, muscles, and organs.
In infants, scurvy looks somewhat different. It rarely appears before seven months of age and tends to cause bone pain and swelling rather than the corkscrew hairs and skin changes seen in adults. Because the bone abnormalities can mimic signs of physical abuse on X-rays, a careful dietary history is important to distinguish the two.
Who Gets Scurvy Today
Scurvy isn’t just a relic of 18th-century sailing ships. Modern cases keep appearing, and the people at highest risk share one common thread: a diet that consistently lacks fruits and vegetables.
Children with autism spectrum disorder or other neurodevelopmental conditions represent a large share of recently reported cases. This is linked to extreme food selectivity, where a child may eat only a handful of foods, none of which contain meaningful vitamin C. Eating disorders and avoidant/restrictive food intake disorder carry similar risks.
Low income is another significant factor. Families in the lowest income brackets and people living in areas without easy access to affordable fresh produce are more vulnerable. Men appear to be at higher risk statistically, possibly reflecting dietary patterns. People with conditions that impair nutrient absorption, including celiac disease, inflammatory bowel disease, and kidney disease requiring dialysis, are also at elevated risk because even if they eat enough vitamin C, their bodies may not absorb or retain it effectively.
Older adults living alone, people experiencing homelessness, and those with alcohol use disorder round out the modern risk profile. The common factor is always the same: weeks to months without adequate vitamin C.
How Much Vitamin C You Need
The recommended daily intake for adult men is 90 mg and for adult women is 75 mg. That’s easily met with a single orange, a cup of strawberries, or a serving of bell peppers. If you smoke, you need an additional 35 mg per day because smoking accelerates how quickly your body uses up vitamin C.
Scurvy develops when intake drops far below these levels for a sustained period, typically weeks to months. Your body stores a limited reserve of vitamin C, roughly enough to last one to three months depending on your starting levels. Once those stores are depleted, symptoms begin.
How Scurvy Is Diagnosed
Diagnosis is often clinical, meaning a doctor recognizes the pattern of symptoms, especially the combination of skin hemorrhages around hair follicles, corkscrew-shaped hairs, swollen bleeding gums, and a dietary history lacking in vitamin C. That combination is highly specific to scurvy and not easily confused with other conditions.
However, when the presentation is less clear, scurvy can mimic several other conditions. The bruising and bleeding can look like a blood clotting disorder, an autoimmune condition, or even leukemia. In children, bone changes on X-rays can raise concerns about physical abuse. A blood test showing a plasma vitamin C level below 0.2 mg/dL supports the diagnosis, and the speed at which symptoms improve after starting vitamin C supplementation often serves as the final confirmation.
Treatment and Recovery Timeline
Scurvy responds remarkably fast to treatment. Once vitamin C supplementation begins, fatigue, pain, confusion, and loss of appetite typically improve within 24 hours. Bruising, gum bleeding, and skin hemorrhages usually clear up within one to two weeks. Corkscrew hairs return to their normal shape by about four weeks. Full recovery takes roughly three months of consistent vitamin C intake.
Treatment typically starts with higher doses for the first few days, then tapers to a moderate daily supplement over several weeks, eventually settling at a maintenance level for one to three months. Most people recover completely as long as the deficiency hasn’t caused irreversible damage to structures like heart valves.
Serious Complications of Untreated Scurvy
If scurvy goes untreated for a prolonged period, the consequences extend well beyond skin and gums. Internal bleeding can affect joints, muscles, and the tissue surrounding the heart. The most common cardiovascular complication is pulmonary hypertension, a dangerous increase in blood pressure within the lungs. In most cases, this reverses with vitamin C replenishment.
In rare but severe cases, prolonged deficiency can damage heart valves, leading to heart failure. When both the left and right sides of the heart are involved, the damage may not fully reverse with supplementation, and the risk of a life-threatening decline increases significantly. Historically, before the cause was understood, scurvy was frequently fatal. Today, deaths from scurvy are rare but not impossible, particularly among people whose condition goes unrecognized for months.