The process of diagnosis by an infant epileptologist may involve several procedures. The first step is to determine if it is a seizure because there are many seizures that resemble seizures but are not actually epilepsy. For example, there are hysterical illnesses where the hysterical child also behaves like epilepsy, so the diagnosis must first be determined. Second, the type of seizure has to be determined, whether it is epilepsy or a type of epilepsy syndrome. Then the etiology has to be determined and a diagnosis of the presence or absence of co-morbidities has to be made. To complete the above diagnosis, the first step is to perform a physical examination based on the medical history provided by the patient’s parents, as well as an EEG to aid in the diagnosis. In addition, cranial imaging is done to understand whether there are any structural abnormalities in the child’s brain. There are also etiologic tests, including genetic, chromosomal, and genetic-metabolic tests, blood and urine tandem mass spectrometry screening, and cerebrospinal fluid, blood biochemistry, and blood gas tests. The diagnosis is based on the history and ancillary tests, and the diagnosis is based on the question of whether it is epilepsy, what type it is, whether it is a certain epilepsy syndrome, and whether there are co-morbidities.