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Hiccups can occur for a variety of reasons. These include eating too much, swallowing air while chewing, or even being anxious or excited. These same triggers can cause babies to hiccup, which is not usually a problem for a healthy child. Itâs easy for a baby to swallow some air while feeding, and extra air can increase the risk of hiccups. This is why itâs important to burp your baby to get the air out of their tummy. Air in the tummy can also make babies uncomfortable and may cause them to spit up.
The most common cause of long-term hiccups is damage to or irritation of the vagus nerves or phrenic nerves, which serve the diaphragm muscle.Factors that may cause damage or irritation to these nerves include: 1  A hair or something else in your ear touching your eardrum.  A tumor, cyst or goiter in your neck.