According to an aspect, there is provided an apparatus (2) for detecting an epileptic seizure in a subject, the apparatus (2) comprising a processing unit (4) configured to obtain head movement measurements, wherein the head movement measurements are measurements of movements of a head of the subject； obtain pupil position measurements, wherein the pupil position measurements are measurements of a position of a pupil in a visible part of an eye of the subject； process the head movement measurements relating to a time period to determine if the head moved in the time period； and, if the head moved in the time period, process the head movement measurements and the pupil position measurements for the time period to determine whether the subject experienced a seizure in the time period.
