Continuous hiccups since last night can be caused by stomach irritation, overeating, acid reflux, spicy food, stress, alcohol, sudden temperature changes, or irritation of the nerves controlling the diaphragm. In many people, hiccups settle on their own, but persistent hiccups can become tiring and disturb sleep, eating, or breathing comfort. Some individuals get quick relief by sipping cold water slowly, holding the breath for a few seconds, breathing into a paper bag briefly, or eating small, bland meals instead of heavy food. Avoid carbonated drinks, smoking, and very spicy meals for some time. If acid reflux or stomach irritation is contributing, doctors may sometimes advise antacids or acid-reducing medicines. Proper rest and relaxation may also help if stress is triggering the problem. Seek urgent medical care if hiccups continue beyond 48 hours, become severe, cause vomiting, chest pain, breathing trouble, confusion, weakness, or difficulty eating and drinking properly.