Hi! greetings from healthcare magic
hiccups has many cuuse. among them acidity is one major cause. if your stomach acid get upward into esophagus
it will irritate one nerve called phrenic nerve
and there will be spasm of diaphragm resulted with hiccup. there are others cause also Na , K abnormality n neurological.
but first take care how not to get acidity. because of hyper acidity you can get reflex headache. so always avoid junk and fast food, avoid any form of tobacco, avoid fried food, take sufficent water and take your meal in time . if it is not getting relief then can go for a check up. thank u