Shape and configuration of skin lesions: grouped herpetiform.

Lesions that may present in a grouped way include diseases with grouped vesicles such as dyshidrosis, nummular dermatitis, herpes simplex, and herpes zoster; diseases with grouped vesicobullae such as dermatitis herpetiformis, herpes gestationis, subacute lupus erythematosus in the bullous variant, and pemphigus herpetiformis; and diseases with grouped pustules such as pustular psoriasis, dermatitis continua of Hallopeau, and impetigo herpetiformis.