Metabolic disorders & Fever
Metabolic disorders [4] may also cause recurring and persistent hiccups in a person. If a person suffers from Hyponatremia, which occurs when the sodium in the blood is too low, making the body retain too much water, they may experience hiccups. Hypokalemia is the term for a lower level of potassium in the blood, which may cause a lot of fatigue and tiredness, and muscle cramps.
Fever is the abnormal increase in the temperature of a human body. Symptoms of fever include fatigue, body aches, headaches, and constant sweating. The abrupt increase in temperature may lead to hiccups. Often, fevers are usually a symptom of a bigger medical issue and should be paid maximum attention when it reoccurs over time.