A method is provided for estimating a risk of relapse of addictive behavior of an individual. The method comprises the steps of providing (S10) a predetermined schedule for the individual to conduct exposure tests, requesting (S20) the individual to conduct exposure tests according to a predetermined schedule, collecting (S30), with a measurement device (303), data from the conducted exposure tests, transmitting (S40) the collected data from the measurement device (303) to a central server unit (301 ), storing the collected data in the central server unit (301 ), evaluating (S60) a behavioral pattern of how exposure tests are conducted, estimating a risk of relapse based on the evaluated behavioral pattern and the measurements of the individual's exposure to the addictive stimulus, and if the estimated risk is greater than a predefined level, transmitting (S80) a message to a third party (304) informing about the estimated risk.
