You are called to a private residence to evaluate a child. T…

You are called to a private residence to evaluate a child. The mother is quite embarrassed about calling EMS, but she claims her 3-year-old-son is talking very strangely. The family was eating supper and he started talking with a high-pitched voice. He is acting very frustrated and irritable. He keeps trying to stick his hand into his mouth. He does cough once in awhile, but then he goes back to playing or running through the house. The boy was eating roasted chicken, corn, and French fries for supper. You are concerned about the high-pitched voice without any other symptoms, because it could indicate: