My daughter is 12 and has often complained of stomach pain over the last couple of years that doctors usually associate with ADHD.  She occasionally cries from the pain, which is bothersome because she typically has a VERY high tolerance for pain.  Yesterday she told me it feels like she has a lump in her throat when she swallows.  Could this be something serious, and how much should I push to get a definitive answer from her doctor?
HI.ADHD is a diagnosis by exclusion, meaning when all the tests are negative. I would advise you to take her to the Pediatric Surgeon for clinical examination, proper history taking and investigations like ultrasonography, confirmatory CT scan to see for abdominal lymph nodes, appendicitis, problems related to ovaries as she is 12, or any other pathology. ENT opinion as she may have granular pharyngitis or lymphoid hyperplasia as a cause of feeling of a lump in the throat. The treatment required for both the problems will be the same and at the same time give her treatment for worms and a course of antibiotics and anti-inflammatory medicines. This should solve her problems. ADHD should be considered only if all the investigations and treatment have failed to show a cause.