When diagnosing a failure to gain adequate weight, the healthcare provider will take a thorough medical history and perform a physical examination. The provider will seek information about:
If a doctor does not have a diagnosis after the history, physical, and laboratory evaluation, he or she may order further studies. A feeding evaluation, usually done by an occupational therapist, can rule out the presence of a subtle feeding disorder. A psychological and social service evaluation of the family may also be in order.