What causes nightmares?
Abrupt alcohol withdrawal; Breathing disorder in sleep; Death of a loved one; Excessive alcohol consumption; Illness with a fever; Sleep disorderI looked it up, and these are some causes
sugar b4 bed
Sugar and possible meds
Over eating, alcohol, drugs, narcotic, excessive of nicotine, chronic diseases, mental disorder, brain injury, sleep disorder, loneliness, isolation, hypersensitive, possessives, etc, causes nightmares.
i think it depends on whats on your mind that night .Or also if youhh see something scary and its stuck in your head