A decision support system was developed implementing the WHO guideline for diarrhea management. The decision-support system is integrated into a medical records application on a handheld computer. The system will be used by primary health care workers in rural India. The guideline was encoded as a set of chained rules in CLIPS format. To enhance adherence to guidelines, we use a model based on a context-adapted guideline to provide decision support at the point of care in a particular setting. The purpose of the system is to tailor the recommendations based on the patient's condition and the local factors such as resource availability in order to create feasible uniformity in a practice across different providers of care.