Full-size Left-side Hidden
SECONDARY MORPHOLOGIES AND ARRANGEMENTS

Annular lesions (Fig. I.7)

Annular lesions form rings with central clearing.

Figure not available in preview mode


Annular macules or minimally elevated plaques

  
      Cutis marmorata
      Erythema multiforme

  
      Erythema ab igne
      Erythema migrans of Lyme disease
      Erythema marginatum of rheumatic fever
      Livedo reticularis
      Purpura annularis telangiectoides
      Targetoid hemosiderotic hemangioma

Annular papules or plaques with no scale

  
      Basal cell carcinoma
      Granuloma annulare
      Sebaceous hyperplasia

  
      Desmoplastic trichoepithelioma
      Sarcoidosis
      Syphilis (especially on face of darkly pigmented individuals)

Annular plaques with some scale or crust

  
      Basal cell carcinoma
      Eczema, especially nummular
      Lichen planus
      Lupus erythematosus (especially Ro-positive subacute form)
      Pityriasis rosea
      Psoriasis
      Reiter's disease (circinate balanitis)
      Seborrheic dermatitis
      Tinea
      Warts, especially recurring after cryotherapy

      Chromomycosis (rare presentation)
      Elastosis perforans serpiginosa
      Erythema annulare centrifugum
      Erythema gyratum …