Clinical features

• similar to the ones seen in acute disease: erythema, tenderness and swelling, retraction of the proximal nail fold and absence of the adjacent cuticle
  
• disease usually involves one or several fingers (thumb and the second or third fingers of the dominant hand)
  
• changes in the nail plate include:
  • discolouration
  • thickening
  • pronounced transverse ridges due to inflammation of the nail matrix e.g.- Beau's lines
  • nail loss

Reference:

1. Leggit JC. Acute and chronic paronychia. Am Fam Physician. 2017 Jul 1;96(1):44-51.