Conversation: The conversation between human and AI assistant.
[|Human|] My 14 yr old son is 1 yr diagnosed with underactive thyroid.. It is still unstable, he went from 25mg eltroxin to 150mg in 10mths. He also was diagnosed with Gilberts disease. He is very fit and plays competive football however, for the last 2 games he had become unwell on the pitch. He feels there is something in his throat and has chest pain (ecg ruled out any abnormal activity) and today vomited black.. Thank you
[|AI|]  Thank you for posting query @ ChatDoctorvomiting blood (hematemesis) is an emergency.it has many causes like gastritis, gastric ulcer disease, liver disease (but It's unlikely here, duodenal ulcer, Mallory Weiss tear....) visit hospital and try to fix an appointment with a gastroenterologist asap, and he needs to undergo gastrostomy immediately. Also check his liver function test (liver enzymes) and complete blood cell count if any further questions, feel free to ask. Health professionals aim to diagnose properly and manage patients according to their limited knowledge. Cure is blessed by the ONE who Created us, whose power and knowledge is unlimited .wish you good health. Regards, Chat Doctor.