A method and system for detecting psychogenic non-epileptic seizures comprising a portable battery powered device placed on the body of a patient and means for manually logging detected seizures within a time period. The device may advantagely comprise a seizure detection algorithm which automatically records seizures detected within that time period. The two sets of data may then be transferred to a second device where the logged time stamps are matched to the recorded time stamps for determining if the detected seizure is a PNES or not. This provides a cheap and simple method for detecting PNES by using a seizure detection device comprising an EMGsensor or an accelerometer.