Febrile convulsions can cause extreme anxiety to parents. Factors associated with parental anxiety and its relief during and after admission of their child for simple febrile convulsions were studied by questionnaire. Of the 70 parents approached 46 responded (66%), all of whom reported feeling anxiety. Factors directly associated with parental anxiety were lack of knowledge regarding the management of seizures and the performance of a spinal tap or EEG. There was no correlation between a previous seizure in the same child or in a first-degree relative and a decrease in anxiety in the present seizure. Hospital admission of the child yielded no relief of anxiety in 27.3% and some relief in 34.1%. Staff activity was insufficient regarding parental instruction in handling the child in the event of a recurrence. About two-thirds of the parents wished to continue neurologic follow-up after discharge, and about one-half preferred that the child be treated with anticonvulsants. Our findings show that a very intensive effort is required to relieve parental anxiety after febrile convulsions. It is suggested that routine parental preventive education in this area be conducted in well-baby clinics.