Peritonsillar abscess, a complication of tonsillitis, is not uncommon. The
usual treatment consists of needle aspiration or surgical drainage and anti
biotic treatment. Tonsillectomy may be used in the management of this condi
tion, either at the time of diagnosis or after an interval period. Severe c
omplications of peritonsillar abscess are rare. Synergistic necrotizing cel
lulitis is a fulminant infection associated with spread along fascial plain
s, necrosis of connective tissue and muscle, and high mortality. It is usua
lly otondogenic in origin in the cervicofacial area and occurs in debilitat
ed or immune compromised patients. We discuss cervicofacial-necrotizing sof
t tissue disease and report an unusual case of extensive synergistic necrot
izing cellulitis of the neck, chest, and shoulder as a result of a peritons
illar abscess. Copyright (C) 2001 by W.B. Saunders Company.