Dermatologic diseases are classified most commonly by morphology, by pathogenesis, or by etiology. Nontraditional classifications may be useful in terms of providing a reassessment of traditional views about disease interrelationships. This review of dermatoses characterized by neutrophilic infiltrates and dermal vessel changes reveals evidence suggesting that these dermatoses result from immune complex-mediated, neutrophil-induced dermal vessel damage. Therapeutic approaches to these heretofore unlinked dermatoses are remarkably similar.
