Sleep deprivation, excessive physical work, overstressed mental work, strenuous sports, hunger, overfilling, drinking large amounts of water at a time, constipation, drinking alcohol, drinking strong tea, using large amounts of caffeinated food (such as chocolate, etc.), mental stress, sadness, sorrow, emotional impulsiveness, colds, fever, menstruation in female patients, and various transient metabolic disorders and allergic reactions can trigger seizures in patients. Hyperventilation has a triggering effect for akathisia seizures, excessive water intake for tonic clonic seizures, and flashing lights for myoclonic seizures. Some patients have seizures only under certain conditions, such as flashing lights, music, mental arithmetic, reading, writing, playing chess, playing cards, bathing, brushing teeth, starting, and external ear canal stimulation, which are collectively referred to as reflex seizures.