Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 11/1/2025

Management of Plantar Corn and Onychomycosis

Diagnosis and Assessment

  • The British Journal of Dermatology recommends conservative debridement of plantar corn using appropriate technique to avoid overdebridement and tissue damage 3
  • Biomechanical assessment with pressure distribution analysis is necessary to identify causative factors of plantar corn 3
  • The British Journal of Dermatology suggests that pressure redistribution interventions, including cushioning and orthotic recommendations, can help prevent corn recurrence 3
  • Assessment and management of second MTP joint deformity/bunion is crucial for patients with plantar corn and MTP joint inflammation 3

Treatment and Management

  • The British Journal of Dermatology recommends oral terbinafine 250 mg daily for 12 weeks as first-line systemic therapy for toenail onychomycosis 4
  • Baseline liver function tests and complete blood count are required before initiating terbinafine therapy 4
  • The British Journal of Dermatology suggests that patients with onychomycosis should discard old contaminated footwear or decontaminate them with naphthalene mothballs 5
  • Applying antifungal powders inside shoes regularly can help prevent onychomycosis recurrence 5

Prevention and Patient Education

  • The British Journal of Dermatology recommends wearing cotton, absorbent socks and changing them daily to prevent onychomycosis recurrence 5
  • Keeping toenails trimmed short and avoiding sharing nail clippers can help prevent onychomycosis 5
  • Wearing protective footwear in public bathing facilities, gyms, and hotel rooms can help prevent onychomycosis 5
  • Patient education on proper foot care, nail hygiene, and prevention of corn recurrence is essential for effective management 2