Causes of Prolonged Hiccups

• Eating food too quickly can cause a person to ingest a lot of air, thus giving rise to hiccups.
• Eating too much, especially fatty foods or drinking excessive alcohol or carbonated drinks can irritate the diaphragm. This makes it more likely to suffer from hiccups.
• Brain tumors associated with the brain stem and strokes are also thought to cause prolonged hiccups.
• Certain chronic medical issues such as renal failure have been said to cause hiccups.
• Brain diseases such as meningitis, encephalitis, and trauma to the brain is said to cause hiccups.
• Prolonged hiccups may follow after damage to the phrenic nerve or the vagus nerve.
• Even Some medications are known to cause prolonged hiccups.Dangerous fumes may also cause prolonged hiccups. 
• Infants commonly start hiccupping after coughing or crying. 
• Lastly, excessive anxiety and stressful situations can trigger long-term as well as short-term hiccups.