Nail Pain

Overview

Nail pain is discomfort felt in a fingernail or toenail, in the skin folds around it, or in the tissue beneath the nail. Because the nail unit is packed with nerves and sits over bone, even small problems can hurt a surprising amount. The pain may be sharp, throbbing, or tender to pressure, and it often follows an injury, an ingrown nail, or an infection.

Most causes of nail pain are minor and improve with simple care, but some, especially infections in people with diabetes or poor circulation, need prompt attention. Identifying whether the problem is the nail itself, the surrounding skin, or the tissue underneath helps point to the cause and the right treatment.

Common Causes

Nail pain usually traces back to injury, pressure, or infection:

• Injury: Stubbing a toe, slamming a finger, or dropping something on the nail can bruise the tissue and cause blood to collect under the nail (subungual hematoma), producing throbbing pain.
• Ingrown nail: A nail edge, often on the big toe, that grows into the surrounding skin, causing redness, swelling, and pain.
• Paronychia: Infection of the skin fold beside the nail, with redness, swelling, and sometimes pus.
• Fungal infection: Thickened, crumbly nails that can become painful, especially under pressure.
• Tight footwear or repetitive trauma: Pressure from shoes or activities like running.
• Warts, cysts, or tumors: Growths in or around the nail can cause persistent pain.

Associated Symptoms

Accompanying signs help identify the cause:

• Redness, warmth, and swelling around the nail
• Pus or discharge from the nail fold
• A dark red, purple, or black discoloration under the nail after injury
• Thickened, discolored, or crumbling nails
• A nail that is lifting away from the nail bed
• Throbbing that worsens when the hand or foot hangs down

Fever, spreading redness, or red streaks moving up the finger or toe suggest a more serious infection needing prompt care.

Diagnosis & Evaluation

Most nail pain is diagnosed by examination and history:

• Inspection: Looking at the nail and surrounding skin for injury, ingrowing, redness, pus, or growths.
• History: Recent trauma, footwear, nail care habits, and underlying conditions such as diabetes.
• Nail sampling: Clippings or scrapings tested if a fungal infection is suspected.
• Imaging: An X-ray if a fracture, foreign body, or bone involvement is possible.
• Culture: Sampling pus to guide antibiotics in a stubborn or severe infection.

Treatment & Management

Treatment depends on the cause and severity:

• Injuries: Rest, ice, and elevation ease pain; a doctor may drain blood from under a painful bruised nail to relieve pressure.
• Ingrown nails: Warm soaks and gently lifting the nail edge help mild cases; a clinician can trim or partially remove the nail for severe or recurrent ones.
• Infections (paronychia): Warm soaks for early cases; antibiotics or drainage of an abscess when needed.
• Fungal nails: Topical or oral antifungal medication over weeks to months.
• Pain relief: Over-the-counter pain relievers and well-fitting footwear.
• Protecting the area: Keeping the nail clean, dry, and covered while it heals reduces irritation and infection risk.

People with diabetes or poor circulation should seek care early, since foot infections can become serious. For everyday minor nail pain, resting the affected hand or foot, switching to roomier shoes, and avoiding activities that put pressure on the nail often allow it to settle on its own. If pain keeps returning, especially with ingrown toenails, addressing the underlying cause with proper trimming technique or a procedure to reshape the nail edge gives more lasting relief than treating each flare separately.

Self-Care & Prevention

• Trim nails straight across to help prevent ingrown nails
• Wear well-fitting shoes with room for the toes
• Keep hands and feet clean and dry to limit infection
• Avoid biting nails or aggressively trimming cuticles
• Protect nails during sports and manual work
• Treat athlete's foot promptly to reduce fungal nail infections

When to See a Doctor

See a doctor if nail pain is severe, worsening, or not improving with home care. Seek prompt care for:

• Spreading redness, warmth, swelling, or pus around the nail
• Fever or red streaks running up the finger or toe
• A severely crushed nail, a nail torn from its bed, or a possible broken bone
• Any foot or nail infection if you have diabetes or poor circulation
• A dark streak or growth under the nail that does not match an injury

These can indicate a serious infection or, rarely, a tumor that needs evaluation.

Related Topics

Frequently Asked Questions

References

1. American Academy of Dermatology Association. Nail problems and care.
2. Mayo Clinic. Ingrown toenails — Symptoms and causes.
3. MedlinePlus, U.S. National Library of Medicine. Nail abnormalities.
4. Centers for Disease Control and Prevention (CDC). Fungal nail infections.