Nail Fungus (Onychomycosis): Or something else? Differential Diagnosis

Skin and subcutaneous (L00-L99).

  • Atopic eczema (neurodermatitis).
  • Chronic nail dystrophies – nail formation disorders that may be congenital (dysplasia and malformation syndromes) or acquired
  • Eczema nails
  • Vascular skin changes due to arterial or venous circulatory disorders.
  • Lichen ruber (nodular lichen) of the nail organ – chronic inflammatory disease of the skin / mucosa.
  • Nail psoriasis (nail psoriasis)
  • Onychodystrophy (nail dystrophy) – symptom of many diseases in which fingernails or toenails show a growth or nutritional disturbance (dystrophy)
  • Paronychia (nail bed inflammation).