Webnausea at night is usually a symptom of an underlying condition. Some of the most common causes include acid reflux, anxiety, medication side effects, peptic ulcers,. Webnausea is not pleasant at any time of day, but nausea at night can be especially bothersome when you’re trying to sleep. Nausea is a common symptom of a. Webwhat causes nausea at night? There can be numerous reasons that you wake up overnight—or can’t fall asleep—due to feeling queasy. These are the most. Webshift workers on rotating schedules eat more erratically and frequently than day workers, snack more at night, and consume fewer healthier foods with potentially.