Skin Conditions of the Feet: Tinea Pedis, Contact Dermatitis, and Psoriasis

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

Skin conditions of the feet — fungal infections, inflammatory dermatoses, and chronic skin diseases — are a distinct and important component of podiatric practice that overlap with dermatology but have foot-specific presentations and implications. Correctly identifying foot skin conditions prevents misdiagnosis, inappropriate treatment, and the missed diagnosis of more serious conditions (subungual melanoma presenting as nail dystrophy; diabetic foot ulcer presenting as a ‘blister’). The three most common non-infectious and fungal skin conditions of the foot each have characteristic morphology, distribution, and treatment.

Tinea Pedis (Athlete’s Foot)

Tinea pedis — superficial dermatophyte infection of the foot skin — is the most common fungal infection in humans, affecting 15–20% of the adult population. Three clinical patterns: interdigital tinea pedis (the most common — macerated, scaling, white or erythematous skin in the toe clefts, particularly the 4th web space; secondary bacterial infection [Pseudomonas] turns the skin green and produces malodor); moccasin-type tinea pedis (diffuse scaling and hyperkeratosis on the plantar surface and medial and lateral borders — the ‘moccasin’ distribution; associated with Trichophyton rubrum; chronic, difficult to treat with topical agents alone; often accompanied by toenail onychomycosis); vesicular tinea pedis (bullous; intensely pruritic vesicles on the instep and arch; acute presentation). Treatment: topical azoles (clotrimazole, miconazole) for uncomplicated cases; terbinafine cream for moccasin-type; oral terbinafine (250mg/day for 2 weeks) for extensive or recurrent infection; always treat the toenails if onychomycosis is present (toenails serve as the reservoir for reinfection).

Contact Dermatitis and Psoriasis

Contact dermatitis of the foot: allergic contact dermatitis (Type IV hypersensitivity reaction) to shoe materials — most commonly chromate (in leather tanning), rubber accelerators (in shoe soles), and adhesives; presents as pruritic erythema, vesicles, and scaling in a pattern corresponding to shoe contact (dorsal foot in sandal dermatitis; periungual in sock dye allergy); patch testing identifies the causative allergen; treatment: allergen avoidance, topical corticosteroids, hypoallergenic footwear. Psoriasis of the foot: psoriasis may present on the plantar foot as palmoplantar psoriasis — thick, silvery scale on an erythematous base; particularly challenging because plantar psoriasis is often seronegative for the psoriatic plaque morphology seen elsewhere; may mimic moccasin tinea pedis (KOH prep and culture distinguish fungal from psoriatic); involvement of the nails (nail pitting, onycholysis, subungual hyperkeratosis) is highly characteristic of psoriasis and distinguishes it from tinea unguium in ambiguous cases; treatment: topical corticosteroids, calcipotriene, tar preparations; systemic therapy (methotrexate, biologics) for recalcitrant cases. Dr. Biernacki at Balance Foot & Ankle evaluates foot skin conditions with KOH microscopy and clinical examination, and coordinates dermatology referral for inflammatory skin diseases affecting the foot. Call (810) 206-1402 at our Bloomfield Hills or Howell office.

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In-Office Treatment at Balance Foot & Ankle

If home care isn’t resolving your your foot or ankle concern, a visit with a board-certified podiatrist is the fastest path to accurate diagnosis and a personalized plan. At Balance Foot & Ankle Specialists, Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin offer same-day and next-day appointments at both our Howell and Bloomfield Hills offices. We perform on-site diagnostic ultrasound, digital X-ray, conservative care, advanced regenerative treatments, and minimally invasive surgery when indicated.

Call (810) 206-1402 or request an appointment online. Most insurance plans accepted, including Medicare, Blue Cross Blue Shield, Aetna, Cigna, and United Healthcare.

Frequently Asked Questions

When should I see a podiatrist?

See a podiatrist for any foot or ankle pain that persists more than 2 weeks, doesn’t improve with rest, limits your daily activities, or is accompanied by swelling, numbness, or skin changes. People with diabetes or circulation problems should see a podiatrist regularly even without symptoms.

What does a podiatrist treat?

Podiatrists diagnose and treat all conditions of the foot, ankle, and lower leg including plantar fasciitis, bunions, hammertoes, toenail problems, heel pain, nerve pain, diabetic foot care, sports injuries, fractures, and foot deformities — both surgically and non-surgically.

What can I expect at my first podiatry visit?

Your first visit includes a full medical history, physical examination of your feet and gait, and in-office diagnostic imaging if needed (X-rays, ultrasound). We’ll discuss your diagnosis and create a plan tailored to your foot type. Most visits take 30–45 minutes.

Need Treatment at Balance Foot & Ankle?

Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin see patients at our Howell and Bloomfield Hills offices.

Book Online or call (810) 206-1402

Most Common Mistake We See

The most common mistake we see is: Waiting too long before seeking care. Fix: any foot pain lasting more than 4 weeks, or any sudden severe symptom, deserves a professional evaluation rather than more rest.

Warning Signs That Need Same-Day Care

Frequently Asked Questions

What causes this condition?

Causes include mechanical stress, biomechanical imbalance, age-related changes, and sometimes systemic disease. Our clinical exam plus imaging identifies the specific driver.

Can it go away on its own?

Mild cases sometimes resolve with rest and supportive footwear. Persistent symptoms past 4-6 weeks rarely resolve without active treatment.

Is surgery required?

Most patients resolve with non-surgical care. Surgery is reserved for refractory cases or structural deformity.

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.

Related Care at Balance Foot & Ankle

Clinical foot and ankle services at our Howell and Bloomfield Hills offices.

Custom OrthoticsFoot BracingMLS Laser