Many babies have gastro-esophageal reflux (ger), but they are characterized as "happy spitters" who grow well. The children
with gastro-esophageal disease (gerd)experience painful heartburn
from stomach acid which can cause the back arching you describe, irritability and crying
with eating, constant crying, food refusal, and frequent spitting or vomiting
Some infants will experience less common symptoms from gerd such as episodes where they stop breathing, hoarse voice, excessive drooling
, ear and sinus infections, respiratory problems and poor weight gain
or weight loss.
Once gerd is diagnosed, it can be treated with antacids, acid supressors or acid blockers. The good news is with treatment, most children do well and outgrow this problem in the first year or two of life.
Legal disclaimer: I am providing this general and basic information as a public service and my response to this question does not constitute a doctor-patient relationship. For any additional information, advice, or specific concerns, please speak with your own physician. The information provided is current as of the date of the answer entry.