How to Heal a Bruised Toenail Safely at Home (2026 Medical Guide)

If you stubbed your toe, dropped something heavy on it, or ran a marathon and your toenail looks black or purple, you most likely have a subungual hematoma. The bruise is blood trapped between the nail plate and the nail bed below. The pressure causes the throbbing pain. The dark color is the blood showing through the nail.

Most subungual hematomas heal on their own. Some need a doctor to drain the blood within 48 hours of the injury, especially if the pain is severe or the nail covers a tuft fracture underneath. A small fraction look like a hematoma but are actually subungual melanoma, which is why one specific pattern of dark line in the nail needs urgent medical evaluation.

This guide walks through what is happening clinically, when to manage it at home, when to go to a doctor or ER, and the recovery timeline based on current peer-reviewed medical references.

What Is a Subungual Hematoma

The nail you see is the nail plate. Underneath it is the nail bed, which is rich with blood vessels. When trauma compresses or crushes the toe, those vessels break and blood pools in the small space between the plate and the bed. There is no room for the blood to expand outward, so it presses on the nerves and causes pain that throbs in time with the pulse.

Three things distinguish a subungual hematoma from other dark nail changes:

• Trauma history: hematomas almost always follow a clear injury (stubbing, drop, marathon, ill-fitting shoes). If you cannot remember any injury and a dark spot appeared, that changes the workup.
• Distal migration: per StatPearls, "a subungual hematoma, which is usually a painful lesion that presents following trauma and migrates distally as the nail grows." The dark patch moves toward the free edge over weeks as the nail grows out.
• Pain at onset: the pain is usually immediate and severe in the first 24 to 48 hours, then fades. A painless dark band in the nail is a different problem (more on that below).

The blood under the nail is what makes it look dark. As the new nail grows in from the cuticle, the bruised section moves outward and the new section comes in normal-colored.

When to Drain: and Why the 48-Hour Window Matters

The medical procedure to drain a subungual hematoma is called trephination. A doctor makes a small hole in the nail plate so the pooled blood can escape. Pressure relief is usually immediate.

The current StatPearls reference from June 2025 states clearly: "Current recommendations for managing acute subungual hematomas within 48 hours of injury support trephination." After 48 hours, the blood inside has clotted and trephination no longer drains it. The hematoma will then grow out with the nail over the next several months.

The old 50 percent rule is retired. Older textbooks said remove the nail plate entirely when the hematoma covers more than 50 percent of the nail surface, or more than 25 percent if there is a fracture underneath. StatPearls now states this guidance is outdated: "Earlier guidelines recommended nail plate removal for hematomas involving more than 50% of the nail surface, or more than 25% in the presence of an associated fracture." Modern practice instead bases the decision on the acuteness (within 48 hours) and the patient's pain level.

Trephination tools used by clinicians: the StatPearls procedure description names handheld electrocautery devices and an 18-gauge needle as first-line tools, with a heated paper clip listed as acceptable in resource-limited settings. The device is applied at a 90-degree angle to the nail surface, directly over the center of the hematoma. This is a clinical procedure with infection and pain control around it. Do not attempt this at home.

When to Go to a Doctor or ER, Not the Drugstore

Most bruised toenails are minor and self-resolve. Some are not. Here is the decision rule based on Tier 1 guidance.

Go to a doctor or urgent care within 24 to 48 hours if any of these apply

• Severe pain or throbbing that does not improve with ice and elevation.
• The bruise covers more than one quarter of the nail surface. NIH MedlinePlus specifically writes the home-care threshold as "a nail bruise that is less than one fourth the size of your nail." Anything larger gets seen.
• The toe was crushed or struck with significant force. StatPearls recommends three-view radiographs to evaluate for underlying distal tuft fracture in this scenario, because tuft fractures are commonly associated with hematomas.
• The nail or the surrounding skin is broken open. An open wound changes infection risk and may need a tetanus update. Emergency Care BC clinical guidance states: "Review of tetanus immunization status should be completed for patients with subungual hematoma accompanied with a wound."
• The injury was a high-velocity sports event or fall, especially if walking or weight-bearing is painful. The toe could have a fracture you cannot feel from the surface.

Go to the ER same day if any of these apply

• The nail is partially torn off or hanging.
• The toe is visibly deformed or angled wrong.
• You cannot move the toe.
• There is heavy bleeding from underneath or around the nail.
• The pain is intolerable and ice is not touching it.

Specific red flags for a dark mark that is NOT a hematoma

Per StatPearls subungual melanoma reference, watch for these signs that the dark band is melanoma, not bruising:

• No recent trauma history and the dark patch appeared on its own.
• The pigment band is wider than 3 millimeters with an irregular border (the "B" in the ABCDEF melanoma checker). StatPearls describes "brown-black band greater than 3 mm with an irregular border."
• Hutchinson sign: the pigment extends from the nail onto the surrounding skin. StatPearls describes this as "pigmentation extending from the nail onto the adjacent skin, a finding strongly associated with subungual melanoma."
• The dark patch does not migrate distally with nail growth. A hematoma moves toward the free edge as the nail grows; melanoma stays put.
• The location is the great toe or the thumb. StatPearls states these two digits "together account for 75% to 90% of subungual melanoma cases."

If a dark band in the nail has any of those signs, see a dermatologist. Time matters for melanoma diagnosis.

How to Treat a Minor Bruised Toenail at Home

If the bruise is less than one quarter of the nail, you have no severe pain, no open wound, no signs of fracture, and no melanoma red flags, home care is appropriate. Here is the protocol.

Step 1: Ice and elevate for the first 24 to 48 hours

Wrap an ice pack or a bag of frozen peas in a thin washcloth. Apply to the toe for 10 to 15 minutes, four times daily. Keep the foot elevated above the heart when resting. This reduces swelling and slows the bleeding under the nail.

Do not put ice directly on the skin and do not exceed 20 minutes per session. Cold-induced skin damage is a real risk.

Step 2: Warm soaks starting on day 3 to 5

After the initial inflammation phase, switch to warm soaks. A 15-minute warm-water foot soak once or twice daily increases blood flow to the area, which helps the bruise resolve. Adding Epsom salt is a longstanding tradition for foot soaks. The clinical evidence for Epsom salt accelerating healing is thin, but it is harmless and many people find the soak soothing.

Step 3: Trim the nail short and square

Use sharp clippers. Keep the nail short and square at the free edge so it cannot catch on socks or shoes. Hangnail catches are the main reason a bruised nail tears off prematurely. File any sharp corners with a fine-grit file.

Step 4: Protect the toe in shoes

Open-toe sandals are the most comfortable while the toe heals. If you have to wear closed shoes, choose ones with a wide toe box that does not press the top of the nail. Athletic socks with cushioning at the toe help, and so do moleskin pads for one or two day stretches when you absolutely have to walk on it.

For runners specifically: this is when your shoes need a thumbnail-width of room at the front. Tight-fitting running shoes are the leading cause of recurring subungual hematomas in distance runners. Replace shoes that are too short.

Step 5: Daily cuticle oil to support skin around the nail

The skin around a bruised nail is often dry, irritated, and prone to hangnails as the nail grows out. A daily application of cuticle oil keeps the skin pliable and reduces secondary problems. The Lavis 24K Gold Nail and Cuticle Oil (30 mL, $7.99) is our LAVIS house brand option for daily nail and skin care.

What about over-the-counter pain relief

Ibuprofen or acetaminophen for the first 48 hours helps. Follow the bottle dose. If a normal over-the-counter dose is not enough to control the pain, that is itself a red flag and a reason to see a doctor.

How Long Does It Take for a Bruised Toenail to Heal

This is the most-searched question on the topic, so here is the honest answer from the medical literature.

Nail growth rates were measured in a peer-reviewed study by Yaemsiri and colleagues in 2010, published in the Journal of the European Academy of Dermatology and Venereology. They tracked 22 healthy young adults and found: "Average fingernail growth rate was faster than that of toenails (3.47 vs. 1.62 mm/month, P < 0.01)."

In practical terms:

• Fingernail: NIH MedlinePlus writes "A new fingernail will take about 4 to 6 months to grow to replace the lost nail." A bruised fingernail will look fully normal within 4 to 6 months.
• Toenail: at 1.62 mm per month and a typical great toenail length of around 15 mm from cuticle to free edge, a full great-toenail replacement takes 9 to 12 months, sometimes longer. Smaller toenails grow out faster.

The bruise itself migrates outward toward the free edge as the new nail grows in. You will see the dark patch move toward the tip over several months. The new nail coming in from the cuticle is the healthy color.

What if the nail falls off? It can happen with a large hematoma. The nail bed itself is intact in most cases and a new nail will grow in to replace it. The replacement nail may look slightly irregular for the first growth cycle, then smooth out. If the nail does not grow back at all after 6 months for a fingernail or 12 months for a toenail, that is a reason to see a dermatologist.

For Nail Techs: When a Client Comes in with a Bruised Toenail

This is the section most consumer health articles do not cover, and it is where wholesale nail-supply customers operate. If a pedicure client shows up with a visibly bruised toenail, here is the responsible playbook.

What to do

• Look at the nail before service. Note the size of the bruise, whether the nail edge is intact, and whether the skin around it is broken. A small minor bruise covering less than one quarter of the nail with intact surrounding skin can usually be polished over after gentle prep.
• Ask about timing. If the injury was within 48 hours and the client is in significant pain, recommend they see a doctor for possible drainage before scheduling the pedicure. A pedicure on a freshly bruised nail with active throbbing is uncomfortable and may worsen the bleed.
• Trim and file conservatively. Keep the nail short, square, and edges smooth. Do not aggressive-buff or thin the nail plate over the hematoma. The plate is what is protecting the nail bed underneath.
• Use gentle cuticle work. Push the cuticles, do not cut them. The skin around an injured nail is more prone to infection than usual.
• Polish only if the nail and surrounding skin are intact. A clean polish over a healing bruise is fine and can help disguise the appearance for several weeks. Avoid acetone-based removers more than once a month while the nail heals.

What NOT to do

• Do not attempt drainage. Trephination is a medical procedure with infection risk, and the 48-hour window has likely passed by the time the client comes in.
• Do not file the top of the nail to "smooth out" or remove the dark color. The bruise is underneath the plate, not on the surface. Filing only thins an already-stressed nail.
• Do not apply hard gel overlays or builder gel over a healing bruise. They mask the appearance but make removal harder and trap moisture against the nail bed during a vulnerable period.
• Do not apply aggressive treatments (electric files at high RPM, harsh primers) over the bruised area.

If you spot a dark band in a client's nail with NO trauma history, especially one wider than 3 mm with an irregular border or extending onto the surrounding skin, recommend the client see a dermatologist. Do not polish over it without that visit. The melanoma question matters and your professional observation is often what gets the client to the doctor.

After Care: What Helps Long-Term Recovery

Once the immediate pain and swelling are gone, the nail will take months to fully replace itself. These habits help.

First 2 weeks: keep the toe clean and dry. Apply cuticle oil daily to the skin around the nail. Avoid prolonged water exposure (long baths, swimming pools) until any open skin has healed.

Through month 6: continue daily cuticle oil. If the nail feels thin or flexes more than usual, the LDS Gel Strengthener ($5.75, compatible with all soak-off gel polish brands) is our LDS house brand option for a thin reinforcement coat. It does not thicken the nail or trap moisture.

Through month 12 for a toenail: maintain shoe fit with thumbnail-width of room at the toe. Replace running shoes that are too short or compressed. Reinjury during regrowth is the main cause of permanent nail deformity.

FAQ

Can I drain a bruised toenail at home with a heated paper clip?

No. Even though StatPearls lists a heated paper clip as a trephination tool used in resource-limited clinical settings, the procedure carries real infection risk and the 90-degree application angle and sterile technique matter. The home version, attempted without local infection control, can introduce bacteria into the nail bed. If you are within the 48-hour window and the pain warrants drainage, urgent care or the ER will do it cleanly in a few minutes.

Will my toenail fall off?

It can with a large hematoma. The nail bed is usually intact and a new nail will grow back in. The replacement nail takes about 9 to 12 months for a great toenail to be fully normal.

Why is the dark spot moving toward the tip of my nail?

That is the bruise migrating distally as the new nail grows in from the cuticle. This is the classic and reassuring sign of a hematoma, per the StatPearls subungual melanoma reference. A dark mark that does NOT move with nail growth is the one to get evaluated.

Should I take antibiotics after a bruised toenail?

Not routinely. The current StatPearls evidence summary states: "Current evidence does not support routine use of postprocedure antibiotics, as a small observational study of 47 patients found no benefit." Tetanus status is a separate consideration if the skin is broken.

Can I paint over a bruised toenail?

Yes, once the immediate pain has settled and the surrounding skin is intact. Polish does not affect the healing. It does make the bruise less visible during the months of regrowth.

Will the new nail look normal?

In most cases, yes. The first cycle of regrowth after a hematoma may have slight ridges or be slightly irregular at the cuticle. By the second full growth cycle (about 18 to 24 months for a great toenail), most nails look fully normal.

When should I see a dermatologist instead of a podiatrist or family doctor?

If the dark band has any melanoma red flags (no trauma history, band wider than 3 mm with irregular border, Hutchinson sign of pigment extending onto skin, no distal migration), see a dermatologist. For a clear hematoma with mechanical injury, a family doctor or podiatrist is appropriate.

Closing: A Simple Decision Rule

If you stubbed your toe today and the nail is starting to darken, ice it now and watch the next 48 hours. If the pain is severe or the bruise covers more than one quarter of the nail, go to urgent care.

If the injury was more than 48 hours ago and the pain has settled, home care is the path. Cuticle oil daily, comfortable shoes, patience. The nail will grow out in 9 to 12 months for a great toenail or 4 to 6 months for a fingernail.

If a dark band appeared without trauma and is wider than 3 mm, or extends onto the surrounding skin, see a dermatologist this week. Not next month.

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Related guides on ND Nail Supply:

• How to Fix Pincer Toenails: Symptoms, Causes, and Treatment
• Spoon Nails (Koilonychia): What Causes the Concave Shape
• How to Remove Hard Gel Nails Safely at Home (2026 Guide)

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Medical sources verified for this article (Tier 1 only):

• Sequeira Campos M, Launico MV. Subungual Hematoma Drainage. StatPearls, NCBI Bookshelf NBK482508 (updated June 24, 2025)
• StatPearls: Subungual Melanoma (NCBI Bookshelf, 2024)
• Yaemsiri S, Hou N, Slining MM, He K. Growth rate of human fingernails and toenails in healthy American young adults. Journal of the European Academy of Dermatology and Venereology 2010 (PubMed PMID 19744178)
• NIH MedlinePlus, Nail injury (000800)
• Emergency Care BC, Subungual Hematoma Treatment Clinical Summary

This article is for general education. It is not medical advice. See a licensed healthcare provider for diagnosis and treatment.

Updated June 2026.