The symptoms appear to be multisystemic and are unlikely to be explained by a simple “stomach problem” alone. Persistent post-meal nausea/vomiting, early satiety, dizziness, sweating in crowded places, headache, abdominal pain, and recent insomnia warrant a comprehensive evaluation.
I would recommend a pediatrician/physician evaluation with baseline investigations:
* CBC, ESR/
CRP
* Blood glucose (fasting/
HbA1c)
*
Thyroid profile (
TSH, FT4)
*
LFT, KFT,
electrolytes
* Serum
Vitamin B12,
Vitamin D,
ferritin/iron profile
* Urine routine
* ECG and orthostatic BP/heart rate measurements
If gastrointestinal symptoms persist despite treatment or there is significant early satiety/weight loss, consultation with a pediatric gastroenterologist and consideration of abdominal ultrasound, H. pylori testing, or upper GI endoscopy may be required.
Meanwhile, small frequent meals, adequate hydration, regular sleep schedule, avoidance of oily/spicy foods and excessive caffeine, and keeping a symptom diary to identify triggers.
Given the sweating and discomfort specifically in crowded places along with new-onset insomnia, a psychological assessment for anxiety/panic symptoms should also be considered, as these conditions commonly coexist with gastrointestinal complaints in adolescents and are highly treatable.
Next Steps
small frequent meals, adequate hydration, regular sleep schedule, avoidance of oily/spicy foods and excessive caffeine, and keeping a symptom diary to identify triggers.
Health Tips
Seek urgent medical attention if she develops persistent vomiting, severe headache, fainting, blood in vomit/stool, significant weight loss, neurological deficits, or worsening abdominal pain.