At those times, parents will want to have a physician evaluate their child. Parents also need to be aware, if there are toddlers in the house, of other dangers in the Halloween bags. While checking all candy for tampering, also remove candy that presents a choking hazard. Candies that are particularly easy to choke on are the large hard candies such as jaw breakers, or smaller ones that can get directly into the lungs such as peanuts or other small candy. Don't allow toddlers to have those types of candy.
Many children complain of stomach pain with no identifiable pain.
Stomach pain can be caused by constipation, irritable bowel syndrome, lactose intolerance, inflammatory bowel disease. It also can have a psychological origin.