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Uniqcret doctor knowledgesINMEDINMED Dermatology

Fingernail vs Toenail Onychomycosis: Diagnosis, Treatment & Key Differences

Focus: Fingernail vs Toenail 1) Diagnosis Onychomycosis = fungal infection of the nail (dermatophytes most common) Clinical features Yellow / white discoloration Thickened nail Subungual debris Onycholysis (nail lifting) Starts distal → proximal Confirmation (IMPORTANT before long treatment) KOH preparation Fungal culture Nail clipping + PAS stain 👉 Exam pearl: Not every abnormal nail = fungus → confirm before oral antifungal 2) Pathophysiology Fungus invades nail bed → nail plate Uses...

EN8 Apr 2026· 2 min read