Female, 16 years old, stomach not handling any spicy or heavy food, severe heartburn, not feeling hungry for days, feeling nauseous and severe retching

Professional Assessment: The presenting symptoms strongly suggest upper gastrointestinal pathology, with primary differential diagnoses including gastroesophageal reflux disease (GERD), gastritis, peptic ulcer disease, and notably in a 16-year-old female, the possibility of an eating disorder should be carefully considered. The pathophysiological mechanism likely involves either increased acid production, decreased lower esophageal sphincter tone, or mucosal inflammation, while psychosocial factors common in adolescent females may be contributing to or exacerbating the symptoms. Given the patient's age and gender, risk factors to consider include H. pylori infection, NSAID use, stress-related factors, and potential body image concerns that are prevalent in this demographic. Additional testing should include H. pylori screening, upper endoscopy if symptoms persist, and comprehensive screening for eating disorders, while basic laboratory work including CBC, CMP, and thyroid function tests would be appropriate to rule out other systemic conditions.

Take an over-the-counter proton pump inhibitor (like Prilosec OTC) for 14 days to reduce stomach acid production, combined with lifestyle changes including eating smaller, more frequent meals and avoiding trigger foods. Start with a bland diet (BRAT - bananas, rice, applesauce, toast) for 3-4 days while the stomach settles, and stay hydrated with clear fluids and electrolyte solutions. Take liquid antacids (like Mylanta) 30 minutes after meals and before bedtime for immediate heartburn relief. For additional treatment recommendations, ask in the chat.