Toenail Changes — What They Mean | Michigan Podiatrist

Quick answer: Toenail Changes Diagnosis Michigan 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.

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

Your toenails tell a story. Changes in toenail color, thickness, texture, or attachment can be cosmetically concerning, occasionally painful, and sometimes a signal of a serious underlying condition. At Balance Foot & Ankle, Dr. Tom Biernacki evaluates toenail changes with a clinician’s eye — distinguishing between common benign conditions and the rare but important findings that require additional investigation.

Yellow or Discolored Toenails

Most likely cause: Onychomycosis (fungal nail infection) — Yellow, brown, white, or orange discoloration with nail thickening is almost always fungal. Dermatophyte fungi invade the nail plate, causing progressive discoloration, crumbling, and thickening. Diagnosis is confirmed by nail clipping culture or PAS stain — not just visual appearance alone. Treatment options include topical antifungals (Jublia, Kerydin), oral terbinafine or itraconazole (most effective), or laser nail treatment. A confirmed positive culture before starting oral medication is medically sound practice.

Other causes of yellow nails: Yellow nail syndrome (associated with lymphedema and respiratory conditions); psoriatic nails (yellow-orange discoloration with pitting); prolonged use of certain medications; or simply staining from nail polish.

Black or Dark Toenails

Most likely cause: Subungual hematoma — A bruise under the nail from trauma (dropping something on the foot, running in tight shoes) causes blood to pool under the nail plate, appearing black or dark purple. Most hematomas resolve over weeks as the nail grows out. Large, painful hematomas can be drained by piercing the nail plate (trephination) for immediate relief. Always confirm the black discoloration is a hematoma and not melanoma.

Important: Subungual melanoma — Dark pigmentation under the nail that cannot be attributed to trauma requires urgent evaluation to rule out subungual melanoma — a rare but serious skin cancer. Features raising concern: dark streak in the nail (melanonychia) that is widening, has irregular borders, or is accompanied by pigmentation on the surrounding skin fold (Hutchinson’s sign). Any unexplained dark nail stripe warrants a biopsy referral.

Thick or Distorted Toenails

Fungal infection (onychomycosis) is again the most common cause of nail thickening. Other causes: onychogryphosis (ram’s horn nail) — extreme nail curvature and thickening from repeated trauma or poor nail hygiene, common in elderly patients; subungual exostosis — a bone spur growing under the nail causes the nail to lift and distort; psoriasis — produces pitting, onycholysis, and subungual hyperkeratosis (thickening under the nail).

Lifting or Separating Toenails (Onycholysis)

Separation of the nail plate from the nail bed can be caused by fungal infection, trauma, psoriasis, thyroid disease, medication side effects (especially certain chemotherapy agents, tetracyclines, and quinolone antibiotics), or simply from wearing nail polish long-term. The separated nail provides a dark, moist space where secondary bacterial infections can occur. Trimming the separated nail back and keeping the area dry is important while the underlying cause is treated.

White Spots on Toenails

Small white spots (leukonychia punctata) are usually harmless — caused by minor nail matrix trauma (bumping the nail during growth). They grow out with the nail over weeks. Diffuse whitening of the entire nail can indicate systemic conditions including liver disease, kidney disease, or hypoalbuminemia and warrants evaluation.

Get Your Toenails Evaluated in Michigan

Don’t ignore toenail changes — most are treatable and some warrant urgent evaluation. Balance Foot & Ankle provides expert toenail evaluation and treatment at southeast Michigan offices. Call (734) 479-6200 to schedule with Dr. Biernacki.

Frequently Asked Questions

What is Foot pain?

Foot pain is a common foot/ankle condition that affects mobility and quality of life. Understanding the underlying cause is the first step in successful treatment. Our podiatrists at Balance Foot & Ankle perform a hands-on biomechanical exam, review your activity history, and use diagnostic imaging when appropriate to identify the root cause—not just treat the symptom. Many patients have been told to “rest and ice” without a deeper diagnostic workup; our approach is different.

Symptoms and warning signs

Common signs of foot pain include pain that worsens with activity, morning stiffness, swelling, tenderness when palpated, and difficulty bearing weight. If you experience sudden severe pain, inability to walk, visible deformity, numbness or color change, contact our office the same day or visit urgent care—these can signal a more serious injury such as a fracture, tendon rupture, or vascular compromise. Diabetics with any foot wound should seek same-day care.

Conservative treatment options

Most cases of foot pain respond to non-surgical care: structured rest, supportive footwear changes, custom orthotics, targeted stretching and strengthening protocols, anti-inflammatory medications when medically appropriate, and in-office procedures such as ultrasound-guided injections. We also offer advanced therapies including MLS laser therapy, EPAT/shockwave, regenerative injections, and image-guided procedures. Treatment is sequenced from least invasive to most invasive, and we explain the rationale at every step.

When is surgery considered?

Surgery is reserved for cases that fail 3-6 months of well-structured conservative care, when there is structural pathology (severe deformity, complete tear, advanced arthritis), or when imaging shows damage that will not heal without intervention. Our surgeons have performed 3,000+ foot and ankle procedures and prioritize minimally-invasive techniques whenever appropriate. We discuss recovery timelines, return-to-activity milestones, and realistic outcome expectations before any procedure is scheduled.

Recovery timeline and prevention

Recovery from foot pain varies based on severity and chosen treatment path. Conservative cases often improve within 4-8 weeks with consistent adherence to the protocol. Post-procedural recovery may range from a few days (in-office procedures) to several months (reconstructive surgery). Long-term prevention involves footwear assessment, activity modification, structured strengthening, and regular check-ins with your podiatrist if you have a history of recurrence. We provide written home-exercise plans and digital follow-up support.

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.