Several forms of allergy have been reported in the literature.1Among the commoner ones are hay fever, eczema, angioneurotic edema, gastrointestinal allergy, allergic migraine, serum sickness, urogenital allergy, nervous allergy, toxic allergy, drug allergy, allergic headache, bronchial asthma, ophthalmic migraine, some forms of dermatoses and periarteritis nodosa of allergic nature or in association with some other manifestations of allergy.2A careful search of our available literature on allergy has not revealed a reported case of allergic peritonitis. Although Harkavy3has reported 2 cases of "eosinophilic peritonitis," which our case closely resembles, yet there were present associated involvement of other organs in his cases. In the case here reported the involvement is purely peritoneal. The features, clinical signs and symptoms, laboratory observations and therapeutic responses are so distinctive of allergy that we venture to label this case as allergic peritonitis. Our fortunate discovery of this case may henceforth