Clinical manifestation

Acute variant: history of minor trauma or nail manipulation; pain, tenderness, and swelling in lateral nail fold; erythematous, edematous distal finger, sometimes with purulent exudate, most prominent in proximal and lateral nail fold area, with extension into eponychium; purulence of the nail bed; onycholysis

Chronic variant: inflammation, pain, and swelling occur episodically, often after exposure to moist environment; edema-tous, erythematous, tender nail folds without fluctuance; thickened and discolored nail plates, with transverse ridges

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