Around the age of 10, my daughter started experiencing nausea, dizziness, back pains, stomach pains, and headaches.  She is always freezing.  Since then, the doctors have told her it was all in her head.  She spent a year on antidepressants, but all symptoms stayed the same or were worse.  She had her gallbladder out at 15.  She is allergic to most trees, grasses, animals, etc.  She is now 20, and her symptoms have not lessened.  We also went to a homeopathic doctor.  He put her on 20 vitamins, but that is hard to swallow.  Her hair sample showed zinc levels off the chart.  She is currently on thyroid medicine.  We are seeking a doctor that believes she has an actual issue, such as autoimmune... Any ideas of what could be wrong?
I feel for your daughter. On the other hand you have done best in allopathic and homeopathic. I would suggest to my own patients to get Ayurveda treatment support by visiting an Ayurveda doctor who could find body type of the patient (which probably is vat Pitt type) and select medicine accordingly. It would be a long term herbal therapy but no side effects. Totally safe. The worst would be that it would not affect much. Then you always have the choice to leave it. Initially no need to stop anti depressants and thyroid med she is taking currently. Ayurveda doesn't counteract. If she could learn Yoga and Meditation for 35 minutes, it would change her life and would be visible soon. Hope it helps.