Vitamin C Deficiency (Scurvy): Bruising and Poor Wound Healing

One of the earliest and most telling signs that the body has run out of vitamin C is that it starts to come apart at the seams. Bruises bloom from the lightest bump — or from nothing at all. Tiny red-purple dots appear around hair follicles, often first on the shins and thighs. Old wounds that had healed quietly split back open, and new cuts and surgical incisions simply refuse to close. Behind all of it is a single problem: without vitamin C, the body cannot build collagen, the protein scaffold that holds skin, blood vessels, and scar tissue together. This page explains why bruising and stalled wound healing are such reliable clues to vitamin C deficiency (scurvy), why the same symptoms have many other causes, how the diagnosis is made, and how quickly things turn around once the vitamin is replaced.

Table of Contents

1. What It Looks and Feels Like
2. The Mechanism: Vitamin C, Collagen, and the Body's Scaffolding
3. Perifollicular Hemorrhage: the Telltale Sign
4. Honest Picture: Other Causes of Bruising and Slow Healing
5. Clues That Point Toward Vitamin C
6. Who Runs Low and Why
7. Getting Diagnosed
8. Correcting It: Food, Supplements, and How Fast It Works
9. When to Seek Care / Red Flags
10. Key Research Papers
11. Connections
12. Featured Videos

What It Looks and Feels Like

The skin and blood-vessel signs of vitamin C deficiency tend to arrive together and have a distinctive look once you know what to search for. People often describe a slow drift into a body that bruises and breaks down far too easily:

• Bruises from almost nothing — large patches of bruising (ecchymoses) appear after a minor knock, leaning against a counter, or with no remembered injury at all. They are often most noticeable on the legs, where blood pressure in the vessels is highest.
• Pinpoint red-purple dots — tiny spots called petechiae, classically clustered around hair follicles, frequently on the shins, calves, and thighs. This pattern, called perifollicular hemorrhage, is one of the most specific signs of scurvy (see the section below).
• “Corkscrew” body hairs — on the legs and arms, hairs become coiled, curled, or twisted and may be surrounded by a small ring of bleeding. The follicles can also become raised and rough (hyperkeratotic), giving a sandpaper feel.
• Wounds that won't close — new cuts, scrapes, and especially surgical incisions heal slowly or not at all; stitched wounds may pull apart. Strikingly, old scars can reopen — wounds that healed years earlier break down because the collagen holding them together is no longer being maintained.
• Bleeding gums and loose teeth — spongy, purple, easily-bleeding gums often accompany the skin signs (covered in depth on Bleeding Gums & Tooth Loss).

People frequently report that the bruising and slow healing creep up over weeks to a few months, alongside vague fatigue and aching joints. Because each individual symptom is easy to write off — “I must have bumped it,” “I bruise easily,” “wounds heal slowly as you age” — the underlying deficiency is often missed until several of these signs stack up at once.

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The Mechanism: Vitamin C, Collagen, and the Body's Scaffolding

To understand why low vitamin C causes bruising and failed wound healing, you have to understand collagen. Collagen is the most abundant protein in the body — the structural rope that gives strength to skin, blood-vessel walls, tendons, bone, and the connective tissue of the gums. It is also the material the body lays down to knit a wound shut. If collagen is the scaffolding that holds you together, vitamin C is a tool the construction crew cannot work without.

Here is the chemistry, in plain terms. A collagen molecule is a tight triple helix of three protein strands wound around each other. For that helix to be stable and strong, certain amino acids in the strands — proline and lysine — must first be chemically modified by having a hydroxyl group added (a process called hydroxylation). The two enzymes that do this work, prolyl hydroxylase and lysyl hydroxylase, absolutely require vitamin C (ascorbate) to keep functioning: ascorbate keeps the iron atom at the heart of each enzyme in the reduced (active) state so it can run reaction after reaction. Without vitamin C, the enzymes stall.

When hydroxylation fails, the body still makes collagen strands — but they are defective. Under-hydroxylated collagen cannot fold into a stable triple helix, so it is unstable, gets degraded, and is poorly secreted from the cells that make it. Pinnell and colleagues showed this directly: in scurvy, the very inability to hydroxylate proline is what blocks normal procollagen from being secreted, shutting down collagen production (Peterkofsky 1991). The result is connective tissue that is structurally weak everywhere it depends on collagen.

An analogy. Imagine building a wall with bricks but no mortar. The bricks (the protein strands) are all there, but without mortar (the hydroxylation that vitamin C makes possible) the wall won't lock together — it crumbles as fast as you stack it. Blood-vessel walls become fragile mortar-less walls that leak with the slightest pressure, which is exactly why blood seeps into the skin as bruises and petechiae. And a wound is essentially a demand to build a brand-new wall in a hurry; with no usable mortar, the edges can't bond, so the wound stays open — and existing walls (old scars), which the body constantly maintains and rebuilds, slowly fall apart too.

Vitamin C does a second job here as well: it is one of the body's main water-soluble antioxidants and supports the immune cells that clean and defend a healing wound. But the collagen failure is the central reason bruising and poor healing are such hallmark signs of deficiency. (For more on the everyday role of this partnership, see Vitamin C and Collagen Synthesis.)

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Perifollicular Hemorrhage: the Telltale Sign

Of all the skin findings, the single most useful clue to vitamin C deficiency is perifollicular hemorrhage — small spots of bleeding centered on individual hair follicles. To a clinician, this pattern is close to a signature of scurvy, because it ties together the two failures vitamin C causes at once.

Each hair follicle is fed by tiny blood vessels (capillaries). In scurvy those capillary walls are built from defective collagen and are abnormally fragile, so they leak red blood cells into the surrounding skin — producing a small reddish-purple halo right around the follicle. At the same time, the follicle itself becomes plugged with keratin and the hair growing from it coils into the characteristic corkscrew (coiled) hair. The combination — a coiled hair sitting inside a tiny ring of bleeding, repeated across the shins and thighs — is what dermatologists look for. Hirschmann and Raugi, in a classic review of adult scurvy, describe this follicle-centered hemorrhage and corkscrew hair as the disease's most distinctive cutaneous signs (Hirschmann 1999).

Why the legs first? The capillaries of the lower legs work against the highest hydrostatic (standing) pressure in the body, so fragile vessels there are the first to leak. As deficiency deepens, the bleeding can become more widespread and bruises grow larger and more numerous, sometimes with bleeding into muscles and joints. But early on, the quiet appearance of pinpoint bleeding around leg-hair follicles — especially alongside easy bruising and tender gums — is one of the most reliable early-warning signs that vitamin C has run out.

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Honest Picture: Other Causes of Bruising and Slow Healing

It is important to be honest about this: easy bruising and slow wound healing are common, and vitamin C deficiency is far from the only — or even the most likely — cause. Most people who bruise easily are not scorbutic. Before assuming scurvy, it's worth knowing the many other explanations a doctor will consider:

• Aging and sun-damaged skin — thin, fragile skin and capillaries (so-called senile or actinic purpura) cause easy bruising on the forearms and hands in many older adults, with no vitamin deficiency at all.
• Medications — blood thinners (warfarin, apixaban, clopidogrel), aspirin and other NSAIDs, and especially corticosteroids (which thin the skin and impair collagen) all increase bruising and slow healing.
• Low or dysfunctional platelets — the blood cells that form clots. Low counts (thrombocytopenia) or platelets that don't work properly cause petechiae and bruising and need a blood test to detect.
• Clotting disorders — inherited conditions such as von Willebrand disease or hemophilia, or acquired clotting problems from liver disease.
• Diabetes and poor circulation — high blood sugar and reduced blood flow are leading causes of wounds (especially foot ulcers) that won't heal.
• Other nutritional gaps — protein-calorie malnutrition, iron deficiency, and low zinc also impair wound healing; deficiencies of vitamin K or vitamin B₁₂ can cause bleeding or bruising.
• Infection or pressure — a wound that won't close may simply be infected, or under constant pressure (as in a pressure ulcer).

The practical point is that vitamin C deficiency belongs on this list, not at the top of it for most people. What makes a clinician move it up the list is the specific pattern — perifollicular bleeding, corkscrew hairs, spongy bleeding gums, leg-predominant bruising, and a diet plausibly low in fruit and vegetables — together rather than any one sign alone.

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Clues That Point Toward Vitamin C

So when should bruising and poor wound healing make you (or your doctor) think specifically of vitamin C? A handful of features shift the odds:

• The classic skin signature — perifollicular hemorrhage and corkscrew hairs on the shins and thighs, as described above. This pattern is unusual outside of scurvy.
• It travels with bleeding gums — the combination of easy bruising and swollen, bleeding gums in someone with teeth is highly suggestive (see Bleeding Gums & Tooth Loss).
• Joint and leg pain, fatigue, and mood change — deeper deficiency adds aching, sometimes from bleeding into joints and muscles, plus profound tiredness and low mood (see Fatigue & Joint Pain).
• A plausible dietary story — weeks to months of eating almost no fruit or vegetables: very restricted diets, food insecurity, heavy alcohol use, severe mental illness, eating disorders, isolation, or feeding difficulties (covered under Who Runs Low and Why).
• A rapid response to a trial of vitamin C — one of the most convincing clues is that the bruising tendency and gum bleeding begin improving within days of starting vitamin C, which fits scurvy and few other diagnoses.

None of these proves vitamin C deficiency on its own — that's what testing and clinical judgment are for — but together they are the picture that should prompt a clinician to check a vitamin C level rather than stop at “you just bruise easily.”

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Who Runs Low and Why

Humans, unlike most animals, cannot make our own vitamin C — we have to eat it — and the body stores only a limited pool. When intake essentially stops, that pool runs down over roughly one to three months, which is why scurvy can appear surprisingly fast in someone who has stopped eating fruit and vegetables. Modern scurvy is uncommon but is not a disease of the past; case series continue to report it, often in people whose deficiency was overlooked for months (Hashizume 2023). The usual settings include:

• Very limited or monotonous diets — people eating little or no fresh produce: those facing food insecurity or poverty, older adults living alone (“tea-and-toast” diets), and people with highly selective eating.
• Heavy alcohol use — alcohol displaces nutritious food and impairs vitamin C handling; alcohol-use disorder is one of the most common settings for adult scurvy.
• Mental illness, isolation, and eating disorders — depression, severe psychiatric illness, dementia, and restrictive eating all reduce produce intake.
• Smoking — smokers metabolize vitamin C faster and need roughly 35 mg/day more than non-smokers, so a marginal diet tips into deficiency more easily.
• Malabsorption and increased needs — inflammatory bowel disease, prior bariatric (weight-loss) surgery, dialysis, and the increased demands of serious illness or major surgery can outpace a low intake.
• Infants and children on restricted diets — e.g. fed only ultra-processed foods or unfortified non-dairy “milks,” and children with autism-related food selectivity; infantile scurvy (Barlow disease) still occurs.

A recurring theme is that the people most at risk are also the people least likely to be asked about their diet, which is part of why the diagnosis is so often delayed. The fix, encouragingly, is cheap and fast.

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Getting Diagnosed

Scurvy is, first and foremost, a clinical diagnosis — the combination of the characteristic skin and gum findings with a plausible dietary history is often enough for a clinician to act. But a few tests confirm it and rule out the look-alikes from the differential above:

• Plasma (serum) vitamin C level — a blood test that measures ascorbic acid directly. A low level confirms deficiency (levels below roughly 0.2 mg/dL indicate deficiency, though plasma reflects recent intake more than tissue stores, so it is interpreted alongside the clinical picture). Leukocyte (white-cell) vitamin C better reflects body stores but is rarely available outside research settings.
• Complete Blood Count — a CBC checks the platelet count (to exclude low platelets as a cause of bruising) and can reveal the anemia that frequently accompanies scurvy, since vitamin C also aids iron absorption.
• Clotting tests — PT/INR and aPTT are typically normal in scurvy, which helps distinguish it from clotting-factor problems and from the effect of blood thinners; the bleeding of scurvy comes from fragile vessels, not from a clotting defect.
• A therapeutic trial — because the response to vitamin C is so quick and the treatment so safe, clinicians will often start replacement promptly when scurvy is suspected, treating the rapid improvement as confirmation.

If you suspect this in yourself or a family member, the most useful thing you can bring to the appointment is an honest account of what has actually been eaten over the past few months — that history does more to make the diagnosis than any single number.

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Correcting It: Food, Supplements, and How Fast It Works

The best news about this symptom is how dramatically and quickly it reverses. Vitamin C deficiency is one of the most satisfying conditions to treat: bruising and bleeding tendencies often begin improving within a few days, and most symptoms resolve over a few weeks once the vitamin is restored. Fraser and Dean's report of extensive bruising from scurvy is a typical illustration — striking bleeding into the skin that cleared with simple vitamin C replacement (Fraser 2009).

Food first. The whole problem is solved by eating vitamin C–rich produce again, and you don't need much — even modest daily amounts prevent and reverse scurvy. The reference intake is about 90 mg/day for adult men and 75 mg/day for adult women (more for smokers, pregnancy, and breastfeeding); these recommended-intake numbers come from careful pharmacokinetic work mapping how the body absorbs and uses the vitamin (Levine 1996). Good everyday sources include:

• Kiwifruit, strawberries, citrus fruits, and other fresh fruit;
• bell peppers (among the richest sources), broccoli, Brussels sprouts, tomatoes, and leafy greens;
• potatoes — not especially concentrated, but historically an important source because of how much people ate.

Because vitamin C is water-soluble and degraded by prolonged heat, lightly-cooked or raw produce retains the most — but the amounts needed are so small that any return to a normal mixed diet does the job. (More food detail on the Vitamin C Sources page.)

Supplements for active scurvy. When deficiency is established — with bruising, bleeding, or non-healing wounds — clinicians typically prescribe a therapeutic dose of vitamin C for a short period (often on the order of several hundred milligrams per day for one to two weeks, then a maintenance amount) until symptoms resolve and stores are replenished. This is short-term repletion, not indefinite mega-dosing; once the diet is corrected, ordinary food keeps levels normal. There is no benefit to chronic high-dose vitamin C for this purpose, and very large doses carry their own downsides (covered under Vitamin C Toxicity).

For wound healing specifically. Vitamin C is needed to build the collagen of new scar tissue, and correcting a deficiency clearly helps wounds that were stalled by it. It is important to be candid, though, about the limits of the evidence: in people who are not deficient, simply adding extra vitamin C has not been shown to reliably speed healing. A review of vitamin C for pressure-ulcer healing found the evidence inconclusive and did not support routine supplementation in replete patients (Gray 2003). The honest takeaway is that vitamin C is essential for healing and a true deficiency must be fixed — but it is not a wound-healing “booster” for people who already get enough. (See also Vitamin C Benefits.)

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When to Seek Care / Red Flags

Most vitamin C deficiency is corrected calmly with diet and a clinician's guidance, and the skin signs are not in themselves an emergency. But bruising and bleeding have serious causes too, so certain features mean you should be seen promptly rather than wait and see:

• Bruising or bleeding that is sudden, severe, or spreading rapidly, or bruising in a child or young adult with no clear explanation — this needs a blood count and clotting evaluation to rule out a platelet or clotting disorder.
• Bleeding from the gums, nose, urine, or stool, coughing or vomiting blood, or black tarry stools — signs of bleeding beyond the skin.
• A wound that is hot, red, swollen, foul-smelling, or draining pus, or that comes with fever — possible infection needing treatment, not just nutrition.
• An old scar or surgical wound that splits open, or a wound that is clearly not closing — this should be evaluated, both for the cause and because it can point to serious deficiency.
• Severe weakness, shortness of breath, chest pain, or fainting — advanced scurvy can cause profound anemia and, rarely, dangerous internal bleeding, and these symptoms always warrant urgent assessment.
• Suspected scurvy in an infant or young child — irritability, refusal to move the legs (from painful bleeding), or swelling — should be evaluated promptly.

Reassuringly, when bruising and slow healing are due to vitamin C deficiency, the outlook is excellent: the cause is simple, the treatment is cheap and safe, and recovery is usually fast. The reason to get checked is mainly to confirm that vitamin C — and not one of the more serious look-alikes — is what is going on.

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Key Research Papers

1. Peterkofsky B (1991). Ascorbate requirement for hydroxylation and secretion of procollagen: relationship to inhibition of collagen synthesis in scurvy. The American Journal of Clinical Nutrition;54(6):1135S-1140S. — DOI: 10.1093/ajcn/54.6.1135S
2. Hirschmann JV, Raugi GJ (1999). Adult scurvy. Journal of the American Academy of Dermatology;41(6):895-910. — DOI: 10.1016/s0190-9622(99)70244-6
3. Hashizume H, Ishikawa Y, Ajima S (2023). Modern scurvy revisited: Japanese cases of a “forgotten” disease. The Journal of Dermatology;50(11):1493-1497. — DOI: 10.1111/1346-8138.16891
4. Fraser IM, Dean M (2009). Extensive bruising secondary to vitamin C deficiency. BMJ Case Reports;2009:bcr0820080750. — DOI: 10.1136/bcr.08.2008.0750
5. Naidu KA (2003). Vitamin C in human health and disease is still a mystery? An overview. Nutrition Journal;2(1):7. — DOI: 10.1186/1475-2891-2-7
6. Chambial S, Dwivedi S, Shukla KK, et al. (2013). Vitamin C in Disease Prevention and Cure: An Overview. Indian Journal of Clinical Biochemistry;28(4):314-328. — DOI: 10.1007/s12291-013-0375-3
7. Pullar JM, Carr AC, Vissers MCM (2017). The Roles of Vitamin C in Skin Health. Nutrients;9(8):866. — DOI: 10.3390/nu9080866
8. Carr AC, Maggini S (2017). Vitamin C and Immune Function. Nutrients;9(11):1211. — DOI: 10.3390/nu9111211
9. Levine M, Conry-Cantilena C, Wang Y, et al. (1996). Vitamin C pharmacokinetics in healthy volunteers: evidence for a recommended dietary allowance. Proceedings of the National Academy of Sciences;93(8):3704-3709. — DOI: 10.1073/pnas.93.8.3704
10. Gray M, Whitney JD (2003). Does Vitamin C Supplementation Promote Pressure Ulcer Healing? Journal of Wound, Ostomy and Continence Nursing;30(5):245-249. — DOI: 10.1097/00152192-200309000-00006
11. Dickerson JWT (1993). Ascorbic acid, zinc and wound healing. Journal of Wound Care;2(6):350-353. — DOI: 10.12968/jowc.1993.2.6.350

PubMed Topic Searches

• PubMed — Scurvy, perifollicular hemorrhage, and corkscrew hair
• PubMed — Vitamin C deficiency, easy bruising, and ecchymoses
• PubMed — Ascorbic acid, collagen synthesis, and wound healing
• PubMed — Adult scurvy: modern case series and diagnosis
• PubMed — Prolyl hydroxylase, ascorbate, and collagen stability

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Connections

• Vitamin C Deficiency (Scurvy) Hub
• Bleeding Gums & Tooth Loss
• Fatigue & Joint Pain
• Weakened Immunity
• Vitamin C Toxicity (Excess)
• Vitamin C Overview
• Vitamin C and Collagen Synthesis
• Vitamin C Benefits
• Vitamin C Sources
• Iron
• Iron-Deficiency Anemia
• Zinc
• Anemia
• Complete Blood Count
• Kiwifruit
• Broccoli
• Strawberries

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