What is the definition or description of: lithostat allergy?

Lithostat allergies: Lithostat (acetohydroxamic acid) is used for patients who have chronic urea splitting bladder infections. It helps to prevent the buildup of large amounts of ammonia that can contribute to development of some types of kidney stones. See: http://www.lithostat.com. Allergic reactions could include swelling of tongue, throat, lips, mouth, face, hives or difficulty breathing.