A typical case of a previously undescribed form of gingivitis which is self-limiting and recurrent is discussed. The signs and symptoms include acute pain and swelling of interdental papillae with regional lymphadenopathy. As the disease progresses the localized swelling quickly spreads to the adjacent marginal and papillary gingiva. Ulceration is infrequent and without pseudomembrane formation or interdental cratering. We believe this to be a unique form of gingivitis and suggest the name acute recurrent gingivitis (ARG).