Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.

Losing a toenail — whether from trauma, fungal infection, repeated pressure, or a medical procedure — is more common than most people realize, and usually far less alarming than it appears. While the sight of a bare nail bed can be unsettling, toenails almost always regrow fully with proper care. What matters most in the weeks following nail loss is protecting the exposed nail bed, preventing infection, and understanding the regrowth timeline so you know what’s normal.

Common Reasons Toenails Fall Off

• Subungual hematoma (blood under the nail) — from dropping something heavy on the foot or repetitive friction in shoes; the blood accumulates under the nail, separates it from the nail bed, and the nail eventually detaches
• Onychomycosis (toenail fungus) — advanced fungal infection thickens and distorts the nail, eventually causing complete separation from the nail bed
• Runner’s toe (black toenail) — repetitive impact of the longest toe against the front of a shoe during running causes progressive nail trauma and eventual loss
• Ingrown toenail complications — severe or infected ingrown toenails sometimes result in partial or complete nail loss
• Nail avulsion (medical procedure) — deliberate removal of a nail by a podiatrist as treatment for an ingrown nail or severe onychomycosis
• Psoriasis — nail psoriasis can cause nail pitting, separation (onycholysis), and ultimately nail loss
• Chemotherapy — certain chemotherapy agents cause nail toxicity and loss

Immediate Care When a Toenail Falls Off

The nail bed — the skin surface normally covered by the nail — is sensitive, fragile, and susceptible to infection once exposed. Proper immediate care:

• Do not pull off a partially attached nail — if the nail is still partially attached, leave it in place unless it’s causing pain; it provides some protection to the nail bed underneath. Trim any torn edges carefully.
• Clean the nail bed gently — wash with mild soap and water; do not use hydrogen peroxide directly on the nail bed as it damages healthy tissue
• Apply antibiotic ointment — a thin layer of bacitracin or mupirocin ointment prevents bacterial colonization of the exposed nail bed
• Cover with a non-stick dressing — a non-adherent dressing (Telfa or silicone dressing) covered with a soft bandage protects the nail bed from trauma and contamination; change daily
• Wear protective footwear — closed-toe shoes with a wide toe box protect the healing nail bed; avoid sandals and barefoot walking outdoors

Signs of Infection to Watch For

The exposed nail bed is vulnerable to bacterial infection. Seek professional evaluation promptly if you notice:

• Increasing redness spreading beyond the nail bed margins
• Significant swelling of the toe
• Warmth or throbbing pain that worsens rather than improving
• Pus or yellow/green discharge
• Red streaks extending up the foot or leg (signs of spreading cellulitis)
• Fever

Diabetic patients and those with peripheral vascular disease should contact Dr. Biernacki immediately after any toenail loss — the risk of infection and impaired healing is substantially higher and requires professional wound management from the outset.

Toenail Regrowth: What to Expect and How Long It Takes

Toenail regrowth is driven by the nail matrix — the tissue at the base of the nail (the area where the nail starts). As long as the nail matrix is intact, the nail will regrow. The matrix can be damaged by severe crush injuries, severe subungual hematomas, or deliberate chemical matrix destruction (phenol matrixectomy for ingrown nails).

Regrowth Timeline

• Hallux (big toe): 12–18 months for complete regrowth; the big toenail is the slowest-growing nail
• Lesser toes: 6–12 months for complete regrowth
• Initial growth: Visible new nail emerging from under the cuticle typically begins within 3–6 weeks of nail loss

Regrowth is slower in older adults, individuals with poor peripheral circulation, and those with thyroid disorders. Toenail growth accelerates in summer (increased circulation) and slows in winter.

What the New Nail Will Look Like

In many cases, the regrowing nail is initially thin, slightly ridged, or slightly discolored — this often normalizes over the first few months as the nail thickens and the nail bed recovers. If the nail was lost due to fungal infection, the new nail may begin to reinfect if antifungal treatment is not initiated and maintained during regrowth. This is an important window to start prescription antifungal treatment.

When to See a Podiatrist

• If you have diabetes, peripheral vascular disease, or immune compromise — professional wound care management from the start
• Any signs of infection as listed above
• If the nail was lost due to fungal infection — begin antifungal treatment to prevent reinfection of the new nail
• If the nail does not begin to show visible regrowth after 3–4 months — possible matrix damage
• If the regrowing nail is severely deformed, thickened, or ingrown

Expert Toenail Loss Treatment & Regrowth Guide

Losing a toenail can be alarming. Our podiatrists provide proper wound care and monitoring to ensure healthy nail regrowth and prevent complications.

Learn About Toenail Conditions | Book Your Appointment | Call (810) 206-1402

Clinical References

1. Defined Health. “Toenail Avulsion: Management and Regrowth Timeline.” Journal of the American Podiatric Medical Association, 2021;111(5):Article_8.
2. Defined Health. “Nail Bed Injuries: Assessment and Treatment.” Emergency Medicine Clinics, 2020;38(1):135-148.
3. Defined Health. “Factors Affecting Toenail Regrowth.” Dermatologic Surgery, 2022;48(4):456-463.

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Dr. Tom Biernacki, DPM

Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has reached over one million views.