Subungual Hematoma Treatment 2026 | Podiatrist

Condition	Cause	Appearance	Pain Level	X-ray	Treatment
Acute Subungual Hematoma	Direct trauma (heavy object, door, stubbing)	Dark red/maroon collection visible through nail; tender; nail may lift	Severe pulsating (blood under pressure)	Normal bone; possible distal phalanx fracture	Nail trephination (drainage) if painful; nail avulsion if nail plate disrupted
Runner’s Black Toenail (Chronic)	Repetitive microtrauma; shoe too short or too narrow	Dark discoloration beneath nail; minimal pain; nail may eventually shed	Mild to none	Normal	Proper footwear (half-size larger); no intervention; nail regrows 6–12 months
Subungual Melanoma	Malignant melanocyte transformation	Brown-black longitudinal streak (melanonychia striata); irregular, widening; Hutchinson’s sign (pigment spreading to nail fold)	Usually painless initially	Late: bone destruction possible	Urgent biopsy; wide excision; staging; oncology referral
Subungual Exostosis	Bony spur from distal phalanx	Nail lifting; distorted; painful with pressure	Moderate; worse with shoes	Bony spur projecting from distal phalanx	Surgical excision of bony spur

Step	Technique	Purpose
1. X-ray	Lateral and AP view of toe	Rule out associated distal phalanx fracture before trephination
2. Skin preparation	Betadine or chlorhexidine over nail	Reduce infection risk from drainage
3. Trephination (heated paper clip or electrocautery)	Apply tip to nail surface over hematoma; gentle pressure; nail surface punctured with minimal force	Decompress blood under pressure; immediate pain relief
4. Drainage	Dark blood drains under nail pressure; do not squeeze forcefully	Eliminates pressure; allows nail bed to reattach to nail plate
5. Dressing	Non-adherent dressing; digital bandage; shoe with extra toe box room	Protect nail bed during healing
6. Nail avulsion threshold	If >50% nail plate is detached or nail bed laceration visible → formal nail avulsion + nail bed repair under digital block	Nail bed repair prevents nail plate deformity during regrowth

Quick answer: Subungual Hematoma Nail Bed Injury Toenail Trauma Michigan Podiatrist is a common nail condition with multiple causes including trauma, fungal infection, biomechanical pressure, and underlying medical conditions. Treatment depends on the cause: trauma resolves as the nail grows out (6-12 months), fungus needs antifungal therapy, and biomechanical issues need shoe and orthotic correction. Call (810) 206-1402.

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What Is a Subungual Hematoma?

A subungual hematoma is a collection of blood beneath the toenail or fingernail following trauma. When the nail bed bleeds, blood becomes trapped between the nail plate (which is rigid) and the nail bed. As pressure builds, the result is intense, throbbing pain — often disproportionate to the injury’s appearance. Acute traumatic hematomas occur after dropping heavy objects, stubbing the toe, or repetitive microtrauma from running (particularly the classic “black toenail” or “runner’s toenail”). At Balance Foot & Ankle, Dr. Tom Biernacki provides immediate, effective relief through nail trephination and comprehensive nail bed evaluation.

When Should You See a Podiatrist?

Most small, pain-free subungual hematomas can be watched — the nail will eventually grow out and the blood will resolve. However, you should seek podiatric evaluation promptly for: severe throbbing pain beneath the nail; hematoma covering more than 25–50% of the nail plate; any nail avulsion (nail torn away from its base); concern for an underlying fracture (especially after significant trauma); wounds or lacerations adjacent to the nail; signs of infection (increasing redness, warmth, drainage); or discoloration that was not preceded by trauma (this may indicate a subungual melanoma and requires evaluation).

Nail Trephination: Relieving the Pressure

Nail trephination is a simple, effective procedure performed in the office to drain a painful subungual hematoma. Dr. Biernacki uses a heated electrocautery device or a small drill to create one or two small holes through the nail plate, releasing the trapped blood and immediately reducing the pressure and pain. The procedure takes less than 5 minutes and is generally pain-free — the throbbing nail pressure provides natural local anesthesia, and the heated tip is too small to feel. Most patients experience immediate, dramatic pain relief.

X-Ray Assessment for Underlying Fracture

A significant subungual hematoma — particularly one following a crush injury — is associated with an underlying distal phalanx (tuft) fracture in approximately 50% of cases. Dr. Biernacki obtains weight-bearing toe X-rays to identify any fracture before deciding on treatment. An open fracture with nail avulsion requires more aggressive management including nail bed repair, fracture reduction if needed, and antibiotic prophylaxis. Uncomplicated tuft fractures beneath an intact nail can be managed with a toe splint and protective footwear while healing.

Nail Bed Laceration Repair

When the toenail is partially or completely avulsed by trauma, the underlying nail bed may be lacerated. Meticulous nail bed repair under digital block anesthesia is critical for preventing nail deformity and permanent nail plate irregularity. Dr. Biernacki uses fine absorbable suture to repair nail bed lacerations, replaces the nail plate or uses a silicone nail substitute as a biological dressing during healing, and provides wound care guidance during the 6–12 month period before the new nail fully grows in.

Black Toenail in Runners

Chronic “black toenail” in runners results from repetitive microtrauma as the toenail strikes the front of the shoe with each footstrike. The second toe (or longest toe) is most commonly affected. Management includes: correct shoe sizing (thumb-width space from longest toe to shoe tip), properly fitted running socks, shorter toenail trimming technique, and toe protective pads. Dr. Biernacki also evaluates for concurrent subungual pathology including fungal infection, melanoma, and nail bed cysts in chronic cases of nail discoloration.

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Frequently Asked Questions

How long does it take a toenail to grow back?

6-12 months for a full big toenail. Smaller toenails 4-6 months. Speed varies with age, circulation, and nutrition.

Will this affect other nails?

Trauma affects only the injured nail. Fungal infection can spread without treatment. Systemic causes affect multiple nails simultaneously.

Should I cover the nail or leave it open?

Cover with a breathable bandage during work or activity. Leave open at night for healing. Keep dry and clean.

Visit Balance Foot & Ankle — Same-Day Appointments Available

Our podiatry team serves patients throughout Michigan including Howell, Brighton, and Bloomfield Hills. If you’re dealing with heel pain, ingrown toenails, or a foot injury, we have same-day appointment availability.