The aim of this paper was to explore the diagnostic and treatment tools for patients who gag during oral health care treatment. Reference to such tools is not available in scientific literature. For diagnostic purposes, a questionnaire was developed. In due course the results of its reliability and validity will be published. As yet there is no preferred method of dealing with the problem of patients gagging. A recommended option to treat the problem is based on a cognitive behavioural perspective with gradual exposure in vivo. In cases of extreme gagging, teamwork of oral health care provider and psychologist seems to be a prerequisite for success.