You said you were concerned that your child regurgitates and rechews food. S/he may bring partially digested food up into his/her mouth. Then h/she may rechew it and swallow it or spits it out. You said your child has been doing this for at least 1 month. Your child may have had this problem on and off for several months. This problem is not due to a general medical condition. Your child may be losing weight or not be growing as expected. Your child may suffer from malnutrition since s/he is not ingesting food properly.
This problem usually starts around 3-12 months of age. If your child is an infant s/he may:
Your child may have a problem called Rumination. This problem is rare but serious. Your child's doctor will tell you the best way to deal with Rumination.
American Academy of Pediatrics (1996). Diagnostic and Statistical Manual for Primary Care. Elk Grove Village, Illinois: Author.
American Psychiatric Association (APA) Diagnostic and Statistical Manual of Mental Disorders: Fourth Edition (1994).