Toe & Nail Care Specialists in Michigan

Quick answer: Toenail problems — including thickened nails (onychauxis), discolored nails, nail trauma, fungal infection, and ingrown nails — are among the most common conditions we treat. The cause determines the treatment: trauma-thickened nails thin with debridement; fungal nails require antifungal therapy; ingrown nails need partial or total nail avulsion. Call (810) 206-1402 for a same-week evaluation.

Overview: Understanding Toenail Conditions

Toenails serve a protective mechanical function — they shield the distal toe from trauma and assist with fine proprioceptive feedback during gait. When they become diseased, thickened, or deformed, they can cause significant pain, interfere with footwear, and in patients with diabetes or compromised circulation, become a gateway for serious infection.

Nail pathology is not a single diagnosis. The underlying cause — trauma, fungal infection, mechanical pressure, psoriasis, systemic disease, or structural nail deformity — determines both the appearance of the nail and the correct treatment. Treating all discolored or thickened nails with antifungal medication without a proper diagnosis is one of the most common errors in nail care.

Thickened Toenails (Onychauxis and Onychogryphosis)

Onychauxis refers to uniform thickening of the nail plate without significant deformity of nail shape. Onychogryphosis — sometimes called “ram’s horn nail” — is a more severe form where the nail thickens and curves dramatically, often yellowing or browning and curling to one side. Both are common in elderly patients and frequently misidentified as fungal infections.

Causes of Nail Thickening

• Repetitive microtrauma: The most common cause. Shoes that are too short or narrow cause repeated impact at the nail plate, stimulating hyperproliferation of the nail matrix. Common in runners and patients with digital contractures (hammertoes) that cause the nail to strike the shoe roof.
• Onychomycosis (fungal infection): Dermatophytes invading the nail bed stimulate subungual hyperkeratosis — the nail thickens from beneath. This is the most commonly suspected cause but should be confirmed by culture or PCR before antifungal treatment is started.
• Psoriasis: Nail psoriasis produces thickening (subungual hyperkeratosis), pitting, oil-drop discoloration, and onycholysis (separation of nail from bed). It is present in up to 50% of patients with cutaneous psoriasis and nearly 80% of those with psoriatic arthritis.
• Peripheral arterial disease (PAD): Reduced blood flow to the nail matrix slows nail growth and produces thickening, brittleness, and transverse ridging. These nails do not respond to antifungal therapy.
• Elderly-onset nail matrix decline: Nail matrix cell turnover slows with age, producing intrinsically thicker, slower-growing nails in patients over 70 — often without any pathological cause.

Diagnosis and Treatment

Distinguishing traumatic/dystrophic thickening from onychomycosis requires nail clippings sent for periodic acid-Schiff (PAS) stain and fungal culture, or in-office nail PCR testing — a newer method that returns results in 24–48 hours with higher sensitivity than culture. Treatment of confirmed traumatic thickening is mechanical nail debridement — grinding or trimming the nail plate to a comfortable thickness. This is a painless in-office procedure typically performed every 8–12 weeks. It does not cure the thickening but provides lasting symptomatic relief and prevents pressure injury to the underlying nail bed.

Discolored Toenails

Nail discoloration has a broad differential, and the color itself provides diagnostic clues:

• Yellow-brown: Onychomycosis (most common), psoriasis, chronic lymphedema (yellow nail syndrome), tobacco staining
• White (leukonychia): Superficial white onychomycosis (Trichophyton mentagrophytes invading the nail surface), true leukonychia (internal nail plate white spots from minor matrix trauma — the so-called “milk spots”), or hypoalbuminemia (Terry’s nails — white proximal two-thirds)
• Black or dark brown (melanonychia): Subungual hematoma (trauma — blood under the nail), subungual melanoma (the most clinically important consideration), racial melanonychia (benign pigment band from melanocyte activation), or medications (hydroxychloroquine, doxorubicin)
• Green: Pseudomonal superinfection of the nail bed (Pseudomonas aeruginosa) — common where onycholysis has created a moist pocket between the nail and bed
• Red or purple: Subungual glomus tumor (exquisitely point-tender lesion under the nail, especially at the distal third), subungual hematoma

Clinical red flag: A single dark longitudinal streak (melanonychia striata) in the nail of an adult warrants evaluation to rule out subungual melanoma — especially if it is widening, spreading to the proximal nail fold (Hutchinson sign), or associated with nail dystrophy. Biopsy is the definitive diagnostic step.

Nail Trauma

Toenail trauma ranges from minor subungual hematomas to complete nail avulsion and distal phalanx fracture. Proper initial management significantly affects outcomes:

Subungual Hematoma

Blood pooling beneath the nail plate after crush injury or repetitive microtrauma. If the hematoma occupies more than 25–50% of the visible nail area and is painful, trephination (creating a small drainage hole through the nail with a heated wire or sterile needle) provides immediate pain relief and may prevent nail loss. X-ray should be taken in any significant crush injury — a subungual hematoma with this mechanism has a high rate of associated distal phalanx fracture, which changes management (the wound is now considered open).

Avulsion and Matrix Injury

Complete or partial traumatic nail avulsion requires careful evaluation of the nail matrix. Matrix injuries — lacerations or crush injuries to the germinal matrix under the proximal nail fold — require repair to prevent permanent nail deformity. Lacerations are repaired with fine absorbable suture; matrix tissue loss may require a split-thickness nail bed graft. The avulsed nail (if intact) can be replaced as a biological dressing over the repaired matrix during healing.

Chronic Repetitive Trauma (“Runner’s Nail”)

Repeated nail plate impact during distance running or court sports produces subungual hemorrhage, onycholysis, and eventual nail loss. Prevention involves proper shoe sizing (a thumb-width space at the longest toe), lacing techniques that prevent forefoot slide, and toe box selection. Taping the nail and wearing toe sleeves can reduce trauma during high-mileage training.

Nail Conditions Overview — At a Glance

Special Considerations: Nail Care in Diabetes and Vascular Disease

Routine nail debridement in diabetic patients and patients with peripheral arterial disease is not cosmetic — it is preventive medicine. Thickened, untrimmed nails in a patient with sensory neuropathy can create significant subungual pressure that produces ulceration without any perceived pain. The 2024 American Diabetes Association Standards of Care specifically endorse routine podiatric foot examination for all diabetic patients. Medicare recognizes routine nail debridement as a covered service for high-risk patients (Class C and D patients with documented systemic disease).

Key principles for high-risk nail care:

• Never cut nails below the level of the flesh — even minor lacerations in a neuropathic foot can progress to ulceration
• File (rather than cut) nails in patients with advanced PAD where bleeding risk is elevated
• Inspect nail folds and subungual space at every visit for early signs of pressure injury, paronychia, or early cellulitis
• Never debride nails in an ischemic limb without confirming adequate perfusion (ABI or toe pressure)

Red Flags — When to See a Podiatrist Immediately

• Nail discoloration accompanied by spreading redness, warmth, or red streaking up the foot or ankle (possible paronychia progressing to cellulitis)
• Any dark band or pigmented streak appearing in a nail, especially if widening or crossing the nail fold
• Painful nail changes in a diabetic or patient with poor circulation (same-day evaluation recommended)
• Nail trauma with inability to bear weight (evaluate for distal phalanx fracture)
• Greenish nail discoloration with a foul odor (Pseudomonas infection requiring targeted antibiotic therapy)

In-Office Nail Care at Balance Foot & Ankle

Our team provides comprehensive nail care including routine diabetic nail debridement, in-office nail PCR fungal testing, ingrown toenail procedures, nail avulsion, subungual hematoma drainage, and laser fungal treatment. Most visits are covered by Medicare and major commercial insurance for qualified patients.

Related Nail Condition Pages

• Toenail Fungus Treatment (Onychomycosis)
• Ingrown Toenail Removal
• Plantar Wart Removal
• Custom Orthotics